“Multifunctional board and sailboat for helming lying down comprising the same”.

The present invention refers to a multifunctional board (or multitasking board) having a particular design and shape, preferably said board is of the rigid and inflatable type and it was designed with an ansa lunata for improving navigation stability and performance, which allows carrying out sports or leisure activities at the sea or lake shore for all categories of people, including disabled people. Furthermore, the present invention refers to a sailboat for helming at a lying position comprising said board. According to an embodiment, a hull of such board or such board comprises a support element or raised element, with respect to the surface of the deck of the hull and positioned in proximity of the stern of the hull, preferably such support element or raised element obtaining at least one backrest or a chaise longue for a helmsman or user of the board or boat.

The present invention also regards a sailboat in which the hull comprises an element in form of a board. In particular, the invention regards a sailboat that can be driven by the force of the wind, by means of the aforementioned sail (preferably a constrained sail) or, possibly using the paddle.

The use of a board (floater), substantially flat and extended-shaped, to ride the sea waves helping oneself also using a paddle, standing or seated has been known since time immemorial.

The invention of a surfboard for sea sports activities, which exploded in the 60s becoming a very popular sport, is more recent instead. The surf is a single-body board, at the beginning made of wood, which allows to ride the waves. Surfers glide along the wall of the wave standing on the board.

There is even a board called Stand Up Paddling (SUP). SUP boards have a single-body structure, they are made in various models, and one or more fins are positioned on the bottom. The SUP board is provided: with a stern, a bow and a deck on which the surfer rows standing, for example as an activity alternative to sailing when there is little wind. There are several models of Stand Up Paddling and they vary as a function of the sport one plans to engage in.

Windsurf officially dates back to 1967 from an idea of the Californian engineer, James R. Drake, who came up with the idea of potentially surfing even with the sea calm, simply by using a sail connected to the board. A windsurf consists of a single-body board, at the beginning made of wood, whereas glass fibre, Kevlar and carbon are the materials used nowadays. The length thereof may vary between 2.50 m and 4.00 m. The mast onto which the said is fitted is made of aluminium, carbon or fiberglass, the crucial part consists of the heel of the mast which is provided with a joint with which it is fixed to the deck of the board. When the sail of the windsurf falls into the water, due to the fact that the heel of the mast is loose, the sail lies on the water; it is then straightened up using a recovery rope. The sail made of special light and resistant material, is more or less large (3-11 m ² ) with or without battens. The sail is controlled by an elliptical-shaped boom which is stably fixed to the mast, it is wielded by the user to manage the speeds which are totally identical to those of a sailboat.

Lastly, a more recent board solution with sail is represented by Kitesurfing or Kitesurf or more commonly referred to as "Kite”. Introduced in 1999, Kitesurfing is a sailing activity and it is substantially a variant of surf; it consists in being dragged along by a kite. Thus, the wind is the drive force, the kite incorporates a sort of control bar (bar), which acts on thin dyneema or spectra ropes (4-5) called "lines", measuring between 22 m and 27 m in length connected to the kite. The control bar is essential and characteristic for sailing the kite in all activities it is engaged in, and developments.

Also known is the kayak which has a hull whose upper part is shaped to form a seat at times also provided with an element for supporting the back. In kayaks, the helmsman takes a sitting position with the legs stretched or slightly folded forward. This is not an always comfortable and relaxing position.

Lastly, just to point out some forms of sail navigation, in 1947 Clark Mills designed the Optimist which is a sailboat, with a rather strange design featuring a truncated bow which earned it the nickname "bathtub". It is essentially a small shell, for example made of fiberglass, with a reinforced mast hole for supporting the mast called "bench". The sail (spanker) is single and trapezoid-shaped.

The solutions described above provide for the use of a board (floater), of the windsurf, windsup or kitesurf, require that they be utilised by a user (helmsman) who stays in an upright position (standing) on the board and grips a sailing bar (called boom) or a control bar (called helm) fixed to the sail mast or to thin ropes.

It is clear that the helming of said floating boards with sail require a given level of skill and experience so as to be properly utilised by people belonging to all age brackets, even by those at their first steps in the activity.

The greater difficulties arise from the high instability of the boards caused by the wind and by the waves which requires great coordination of the movements of the body thereof by the steersman so as to synchronise, staying upright (standing), the feet are at contact with the board and with the hands gripping the boom or control bar. Due to these reasons, said floating boards with sail (windsurf, windsup or kitesurf) are designated for professional or semi-professional sports activities, and in any case not for people at their first experiences. Furthermore, sports activities that can be carried out using floating boards with sails depend a lot on the wind and the intensity thereof. Thus, while little wind or weak wind often complicates navigation, they basically cannot be used in the absence of wind.

Thus, there arises the need to provide a board (floater) that can be used by adults, children, teenagers and disabled people alike and belonging to all age brackets, even at their first steps in this kind of sports activities, that is light, stable, amusing, and easy to manoeuvre in all wind conditions taking a safe, comfortable and relaxed position.

After a long and intense research and development, the Applicant designed a multifunctional board (or multitasking board) designated for all age brackets and that can be used by anyone, even without any experience, even by disable people, due to the fact that it is suitable for many purposes. Furthermore, the Applicant manufactured a sailboat for helming at a lying down or prone or supine position comprising said multifunctional floating board.

In particular, an object of the present invention refers to a multifunctional board (or multitasking board) having a particular design and shape so as to improve the navigation stability, sliding and performance.

Another object of the present invention is to provide a multifunctional board (or multitasking board), preferably configured so as to be provided with many adaptive accessories (such expression being used to indicate an accessory or means designed for disabled people), that is easy to transport, easy to assemble, that is versatile in the use thereof, cost-effective and easy to manufacture.

A further object of the present invention refers to a sailboat that comprises said multifunctional board (or multitasking board) in which the user (steersman) takes a substantially lying down or prone or supine position. Regarding this, according to an embodiment, a hull of such board or such board comprises a support element or raised element, with respect to the surface of the deck of the hull and positioned in proximity of the stern of the hull, preferably such support element or raised element obtaining at least one backrest or a chaise longue for a helmsman or user of the board or boat.

Yet another object of the present invention refers to a sailboat, preferably with constrained sail, comprising said multifunctional board (or multitasking board) in which the user (steersman) taking a substantially lying down or prone or supine position can also helm and/or manoeuvre the boat under safe conditions and under all wind conditions.

Yet another object of the present invention is to provide a sailboat, preferably with constrained sail, that is easy to manoeuvre and helm so that it is also suitable for use even by amateur sailors and thus with no or little experience.

A further object of the present invention is to provide a sailboat for helming at a lying down or prone or supine position, comprising said multifunctional board (or multitasking board), that is easy to transport, assemble and that is versatile in use thereof.

These and other objects which will be apparent from the detailed description that follows are achieved by the present invention which regards a multifunctional board (or multitasking board) and a sailboat for helming at a lying down or prone or supine position comprising said board.

In the context of the present invention, the expression supine is used to indicate a person lying on his/her back, also commonly referred to as with the face upwards or lying with the back to the ground, while the expression resupine is used to indicate a person lying with the face downwards or prone.

A multifunctional board (or multitasking board) comprising a hull which has a volume suitably dimensioned and designed for the floating and transversal stability, having the characteristics as outlined in the attached claims, forms an object of the present invention.

A sailboat for helming at a lying down position, having the characteristics as outlined in the attached claims, forms another object of the present invention.

Further characteristics and details of the multifunctional board (or multitasking board) and of the sailboat that incorporates it, both subject of the present invention, will be clearer from the following detailed description, provided by way of non-exhaustive example, as well as from the attached drawings, wherein:

- figure 1 is a perspective view of an embodiment of a multifunctional board (or multitasking board);

- figure 2 is a perspective view of another embodiment of a multifunctional board (or multitasking board);

- figure 3 is a plan view of a multifunctional board (or multitasking board);

- figure 4 is a bottom view of a multifunctional board (or multitasking board);

- figure 5 is a perspective view of a sailboat for helming at a lying down or prone or supine position comprising a multifunctional board (or multitasking board); - figure 6 refers to a detail element of the system for fixing the mast containing the sail directly with the hull;

- figure 7 refers to a detail element of the system for fixing the mast containing the sail indirectly fixed or constrained with the hull, by means of a support structure;

- figure 8 is a perspective view of a sailboat for helming at a lying down or prone or supine position comprising a multifunctional board (or multitasking board);

- figure 9 refers to a system for fixing a mast for windsup sailing, directly with the hull, by means of a fixing device;

- figure 10A refers to an embodiment of a multifunctional board, preferably for snorkelling, and figure 10B refers to another embodiment of a multifunctional board (or multitasking board), in which the user lies on the board in a supine position;

- figure 11 refers to an embodiment of a multifunctional board (or multitasking board) with windsup sail using the heel of the mast of figure 9;

- figure 12A refers to a multifunctional board (or multitasking board) in SUP (Sup Stand Up Paddle) version;

- figure 12B refers to an embodiment of a multifunctional board (or multitasking board) in the kayak version;

- figure 13A and figure 13B refer to embodiments of a multifunctional board (or multitasking board) with adaptive accessories for the disabled according to various variants of the present invention;

- figure 14 is a perspective view of a sailboat according to an embodiment of the invention;

- figure 15 is a plan view of the boat of figure 14;

- figure 16 is a cross-sectional view B-B of the boat of figure 15;

- figure 17 is a longitudinal sectional view A-A of the boat of figure 15;

- figure 18 is a perspective view of the sailboat of the invention according to another variant of the invention;

- figure 19 is a plan view of the boat of figure 18 partially disassembled;

- figure 20 is a longitudinal sectional view C-C of the boat of figure 19;

- figures 21, 22 respectively illustrate a top perspective view and bottom perspective view of a support, according to a possible embodiment, in a condition disconnected from the respective multifunctional board (or multitasking board). Figure 21 clearly shows a mouth of the support seat at which the rotation of the mast or of the constrained sail is guided, while figure 22 shows a first means (in form of a threaded rod) for fixing the support to a complementary fixing means of the board (for example a lead screw); - figures 23A and 23B refer to two embodiments of a multifunctional board (or multitasking board), respectively such as a diving support board, and as a supplementary board for rescuing bathers;

- figure 24 shows a floating platform releasably connected to which is a plurality of multifunctional boards, according to any one of the embodiments addressed herein;

- figure 25 shows a so-called“human sailer" according to an embodiment.

The multifunctional board (or multitasking board) 1 of figure 1 comprises a hull 11 which in turn comprises an element called quickwork 12 which is the submerged part of the hull 11 and an element called deadwork 13 which is the dry portion of the hull 11 which includes the deck 14 too. The longitudinal extension direction (or axis) X (greater dimension of the hull) is reproduced too.

The multifunctional board (or multitasking board) 2 of figure 2 comprises a hull 22 which in turn comprises an element called quickwork 23 which is the submerged part of the hull 22 and an element called deadwork 24 which is the dry portion of the hull 22 which includes the deck 15 too. The longitudinal extension direction X (greater dimension of the hull) and the transversal extension direction Y (smaller dimension of the hull) orthogonal to the longitudinal extension direction X is reproduced too. According to an embodiment, inserted into the deck of the board are lead screws 121 , 123, 125, 126 which allows the assembly of at least one heel of the mast and optionally of the accessories (adaptive) addressed further in detail hereinafter.

The multifunctional board (or multitasking board) 2 of figure 2 or of figure 14 has a hull 22 characterised in that it has a profile that reproduces, for each outer edge of the hull, an ansa lunata 25 and 26 both of which extend along the longitudinal extension direction X of the hull 22.

The ansa lunata 25 obtained on the lateral profile of the edge of the hull 22 is on the right side along the longitudinal extension axis X, while the ansa lunata 26 obtained on the lateral profile of the edge of the hull 22 is on the left side along the axis X.

According to an embodiment, the ansa lunata 25 and the ansa lunata 26 are symmetrical to each other in a mirror-like fashion with respect to a centre-line plane M of the hull 22, the axis X preferably being housed in the centre-line plane M.

Advantageously, the presence of the two ansa lunata 25 and 26 along the profile of the hull 22 allow to have an optimised, stable and more performing design/shape of the hull. This particular design/shape allows to exploit the speed and length parameters. The floating line, designed with a recess called "ansa lunata” which projects from the external of the profile of the edge of the hull along the transverse axis Y, allows to increase the floating line - with respect to an equivalent board with external entirely identical (like that of figure 1) - with clear advantage in terms of performance. The ansa lunata 25 and the ansa lunata 26 determine the smaller dimension of the hull along the extension axis Y.

As a matter of fact, the increase of the floating line, due to the presence of the two ansa lunata 25 and 26 (which determine the smaller distance of the hull along the extension axis Y), entails an increase of the theoretical advancement speed of the board 2 according to the formula Vm=1.35 v(L) where L is the floating length of the hull 22 expressed in feet and Vm is the speed expressed in knots.

Figure 3 shows a plan view of the multifunctional board (or multitasking board) 2 of figure 2 which comprises the hull 22 characterised by a first ansa lunata 25 and a second ansa lunata 26. Furthermore, figure 3 shows the detail of the fluid threads 34 and 31 which flow through the profile of the ansa lunata 25 and 26 in the hull 22 and that of the fluid threads 33 and 32 in laminar flow regime in case of the absence of ansa lunata 25 and 26. Lastly, Figure 3 also shows the meeting point "a” of the fluid threads 31 and 32. The ansa lunata 25 and 26 may also be obtained with various designs and shapes more or less extended and/or deep or accentuated depending on the project needs, for example they can be semi-circular shaped (such as C-shaped more or less open or closed) or half ellipse (such as D-shaped more or less open or closed) or undulated (such as S-shaped more or less open or closed”).

According to another embodiment, one or both ansa lunata 25, 26 are arranged in a substantially central area 19 of the hull 22.

The presence of the two ansa lunata 25 and 26 also generates the following further advantage. Basically, in the advancement direction of the hull 22 along the extension axis X, the fluid thread 33 flows in the opposite direction along the floating line. In this case the fluid thread 33 flows in laminar configuration (linear).

While, in the advancement direction of the hull 22 along the extension axis X, the fluid thread 34 flows in the opposite direction along the profile of the ansa lunata 25. In this case, the fluid thread 34 must traverse the entire profile of the ansa lunata 25 and, thus, the path of the fluid thread 34 is longer than the path of the fluid thread 33. In this context, the fluid thread 34 must flow, with respect to the fluid 33, at a higher speed (and thus accelerate) so as to meet in point "a” with the fluid thread 33 which instead flows in laminar configuration at a lower speed in that it must travel a shorter a path (linear). The acceleration to which the fluid thread is subjected 34 generates a vacuum and, thus, lesser resistance of the hull 22 along the longitudinal extension direction X thus allowing the multifunctional board (or multitasking board) 2 a better and faster navigation.

Furthermore, the two ansa lunata 25 and 26 also have the advantage of facilitating the people using the board to stay astride, this being particularly important for example in the case of lifeguards engaged in rescue operations, they allow more comfort when climbing onboard from the water and they also allow people faced with mobility challenges to climb more easily.

Preferably, the multifunctional board (or multitasking board) 2 of figure 2 or of figure 14 also comprises a support element 16 or raised element 27, for example in form of a pillow (or backrest) 28, with respect to the surface of the deck 15 of the hull 22, positioned at the stern of hull 22. The support element 16 or the raised element 27 allows the helmsman of the multifunctional board to comfortably stay in the lying down or prone or supine position thus allowing him/her navigation and manoeuvre. The support element 16 or raised element 27, for example in form of a pillow 28, preferably can be made of material for example such as ethylene vinyl acetate (EVA), or it can be made of rigid material or an inflatable air chamber.

According to an embodiment, the support element 16 or raised element 27 obtains a headrest for the helmsman or user 51. According to such embodiment, such element 16, 27 has a longitudinal direction extension such to provide a support in raised position at least for the head, and preferably for the head and for at least part of the neck, of the helmsman 51.

According to another embodiment, the support element 16 or raised element 27 obtains at least one backrest (or a chaise longue) for the helmsman or user 51. In such embodiment, the element 16, 27 has a longitudinal direction extension (upper with respect to the headrest), such to provide a support in raised position for the head, for the neck and for at least part of the back, of the helmsman 51.

In an embodiment, the support element 16 or raised element 27 can be an integral part of the hull, such as for example in the case of figure 1 where the support 16 or raised 27 element, for example in form of a pillow, is a single element with the hull 11. Alternatively, the support or raised element can be an element that can be mounted, positioned and adjusted if need be by means of special fixing or adjustment means. In this case, the support or raised element can also be removed from the hull. For example, figure 2 shows a support 16 or raised 27 element, shaped to form a pillow 28, which is mounted, positioned and adjusted by means of special fixing and adjustment means 230, 231 and 232.

The multifunctional floating board (or multitasking board) 1 or 2 of the present invention can preferably be made of suitable flexible material based on the prior art of the inflatable boards. The hulls 11 and 22 of the boards 1 and 2 can be of the rigid or inflatable type. They may also be made of other rigid materials, or consisting of singularly airtight rigid pieces that can be joined by means of two special quick couplings.

Figure 4 shows a perspective view of the board 2 comprising the hull 22. The hull of the present invention may comprise one or more elements (for example one or two) fixed or movable, but integrally joined to the hull, like one or more centre boards (or fins) positioned on the quickwork along the longitudinal extension direction X. Basically, obtained on the quickwork 12 of the hull 22 are preferably one or more centre boards, i.e. vertical or longitudinal appendages that protrude from the hull 22, i.e. fins 45 and 46 of various shapes and dimensions. The centre boards are an integral part of the shape and the water lines of the board 2 and of the hull 22.

According to an embodiment, at least one centre board 45, 46 (or fin) is removably fixed to the hull. Preferably, at least one centre board (fin) 45, 46 could be forcedly coupled or screwed to the hull 22.

Preferably, there is the possibility of quickly fitting and fixing a fin 45 into the slot 45a astern which mainly serves for activities such as SUP, while the central slot 46a serves for housing a keel 46 when the board 2 of the present invention is equipped for sailing.

Preferably, a centre board (45 or 46) is conformed and conceived so as to be alternatively insertable into the slot 45a astern or in the central slot 46a. In such manner, the present board may comprise a single fin/keel which, even as a function of the hydrodynamic characteristics thereof, can carry out at least one double function (in particular: SUP and sailing).

Preferably, along the edge of the hull or in positions adjacent thereto or in other positions of the deck 14 of the hull 11 or of the deck 15 of the hull 22, along the longitudinal extension direction X, there are present closed or open elements (at least two elements, one juxtaposed to the other, or four elements two juxtaposed to the other two, or six elements three juxtaposed to the other three) shaped to form an open or closed handle fixed onto the hull, to facilitate the helming, climbing on board, rescuing people, gripping if need be and safety in general. For example, figure 1 shows six closed elements (three juxtaposed to the other three arranged along the longitudinal extension direction X) in form of closed handle (semi-circle) indicated with 110, 111 , 112, 113, 114 and 115 but they can be mounted more or fewer depending on the type of board. While for example, figure 2 shows six closed elements (three juxtaposed to the other three arranged along the longitudinal extension direction X) in form of closed handle (semi-circle) indicated with 221 , 222, 223, 224, 225 and 226, but they can be mounted more or fewer depending on the type of board in this case too.

Though not shown, in an embodiment even the board 2 according to any one of the embodiments subject of figures 14 and 20 could be provided with the closed or open elements addressed in the previous paragraphs.

The deck 14 of the hull 11 and the deck 15 of the hull 22 can also comprise a plurality of fixing means of various shapes (for example circular, square and rectangular) such as for example special inserts for example of the female lead type, as structural elements. In an embodiment, said fixing elements are for example obtained by means of eyelets or slots made of metal for example stainless steel suitably arranged along the deck 14 or 15. In this manner, said fixing means constitute the base for the coupling and support of the accessories such as for example the fixing means 127 for fixing the handle of the mast 42, the fixing means 125 or 126 for fixing the mast holder socket 56, the fixing means 230, 231 and 232 for fixing the pillow 28 or an acquascope holder 700.

Furthermore, the deck 14 or 15 may provide for positioning small belts (557; shown for example in figure 19) for fixing and fastening possible accessories such as oars, underwater fishing gun, torches and bottles, and/or for keeping the hull 22 joined with a respective hiking stick 550 (see hereinafter as concerns this).

A further object of the present invention is to provide a sailboat that is easy to make, easy to helm, manoeuvre, mount as well as inexpensive to produce.

Thus, a sailboat for helming at a lying down or prone or supine position comprising the multifunctional floating board (or multitasking board) of the present invention, forms an object of the present invention.

Figure 5 or figure 14 is a perspective view of the sailboat 50 subject of the present invention. The sailboat may comprise the multifunctional board (or multitasking board) 1 or 2. In a preferred embodiment, the sailboat 50 comprises the multifunctional board 2 which comprises a hull 22 which has a lower surface 23, typically partially or fully submerged in the water called quickwork (which is the submerged part of the hull), and an upper surface 24 (called deadwork which is the dry portion of the hull which includes the deck) suitable to house at least the bust, and preferably also the head, of a person 51 (helmsman) in a lying down or prone or supine position.

The hull 22 has a bow 52 and a stern 53, the deck 15 may also have an ergonomic shape variously designed and integrated in the deck, this to facilitate the right posture of the muscle-skeleton system of the steersman 51, who will have to manage the navigation and manoeuvres staying at a lying (supine) position on the board (hull).

The hull 22 is substantially flat-shaped and extended along a main extension direction X.

According to the invention, the user 51 (helmsman) may position him/herself with the head at an end of hull, the stern 53 in this case. Preferably, said stern 53 is tapered and slightly raised (support element 16 or raised element 27 forming a single body with the hull) or it may comprise a support element or raised element such as for example a pillow 28 (movable support or raised element that can be mounted, positioned and adjusted). In this manner, the user who has taken a lying down or prone or supine position, remains slightly raised allowing him/her a better view during navigation and manoeuvre.

According to the invention, the boat 50 comprises a mast 54 fixed on which is a sail (preferably a constrained sail) 55. The mast 54 or the sail 55 may rotate, with respect to the hull 22, around the rotation axis Z thereof, such axis Z preferably extending parallel to the mast 54. Said rotation axis Z is, preferably, substantially vertical with respect to the floating of the hull under calm weather conditions. Furthermore, said rotation axis Z may preferably lie in an appropriate position along the extension axis X (basically in the line or centre-line plane M of the hull 22 (shown for example in figure 3 and in figure 16)).

According to an aspect of the invention, the sail is supported by a mast or by any other rigid support structure, which rests on a support directly fixed to the hull (first embodiment) or indirectly to the hull by means of a support structure 540 (second embodiment).

In a first embodiment (for example see figure 6 or figure 8), the support, for example socket-shaped, is directly integrally joined to the hull and it is shaped in a manner such that the point of rotation of the sail, preferably a constrained sail, is substantially equivalent to the upper surface (deck) of the hull. The sail (preferably a constrained sail) rotates on the axis Z thereof, but it does not take a parallel position with respect to the floating line due to the fact that a heel of the mast does not provide for an articulatable element or articulation at the lower end thereof. Basically, the mast that supports the sail is constrained to the board in a manner such not to allow the sail to collapse or fall into the water. In this first embodiment, in which the support is directly connected to the hull, the sail supported by the mast is at a distance from the deck of the hull such to be above the body of the user 51 (helmsman) when the latter is lying on the hull in a lying down or prone or supine position. In this manner, the entirety or almost the entirety of the hull can thus be exploited to house the body of the user.

Figure 6 shows a detail element regarding the support. In figure 6 the support 56 is socket-shaped with the opening towards the direction of the axis Z and with the foot connected directly integrally on the deck of the hull.

Figures 21, 22 show further details of the support - only schematised in figure 6 - in a condition where it is disconnected or removed from the multifunctional board (or multitasking board).

The hull is configured in a manner such to receive the base of the socket 56 so that the point of rotation of the constrained sail is substantially equal to the surface (deck 14) of the hull. The sail rotates on the axis Z, but it cannot take a parallel position with respect to the floating plane due to the fact that the heel of the mast or the support do not provide for an articulatable element or articulation at the lower end thereof. Basically, the heel of the mast 54 that supports the sail is in a manner such not to allow the sail to collapse or fall into the water. In this embodiment in which the support 56 is directly connected to the hull, for example on the deck 14 of the hull 1 or on the deck 15 of the hull 2, the sail 55 supported by the mast 54 is at a distance from the deck of the hull so that it can be above the body of the user 51 (helmsman) when the latter is positioned on the hull lying down or supine (figure 5 and figure 8). In this manner, the entire or almost the entire upper surface of the hull (deck 14) can thus be used for housing the body of the user 51.

According to a second aspect of the invention (for example see figure 5 or figure 16), the sail is supported by a mast 54, or by another rigid support structure, which rests on a support 56. In an embodiment the support 56 is in this case connected to or is part of a support structure 540 which, in turn, is integrally fixed with the hull. In this case the mast is fixed to the hull by means of the support structure 540 which comprises the support 56.

The support 56 can be an integral part of the support structure 540, or it can be mounted on an element which is in turn connected to said support structure 540. The support structure 540 may be obtained in rigid form, for example in a single piece (rigid support structure; for example see figure 14), or it may comprise one or more portions movable with respect to each other which - together - create said support structure 540 (movable support structure; for example see figure 5 or figure 7) suitable to receive the mast.

The support 56 arranged on the support structure 540 is shaped in a manner such that the point of rotation of the constrained sail) is raised with respect to the upper surface (deck) of the hull thanks to the presence of said support structure 540. The sail rotates on the axis Z, but it cannot take a parallel position with respect to the floating plane due to the fact that the mast (or the support arranged on the support structure) does not provide for an articulatable element or articulation at the lower end thereof. Basically, the heel of the mast is made in a manner such not to allow the sail to collapse on the water.

Figure 7 shows a detail element regarding the support structure 540. In figure 7 the support 56 is socket shaped (suitable to receive the mast 54) with the opening facing towards the direction of the axis Z and with the foot connected to an element 61 which is in turn part of the support structure 540. The support structure 540 slidably connects the mast 54 onto the deck of the hull of the multifunctional board (or multitasking board) by means of some movable portions connected to each other by means pf joining elements. The support structure 540 may for example comprise the element 61 that is connected with the element 62, by means of the joining element 63. The element 62 is connected with the element 64, by means of the joining element 65. The element 64 is connected to the element 66, by means of the joining element 67. The support structure 540 is integrally fixed to the hull through the element 66 by means of fixing means 68 and 69. In the shown embodiment, the fixing means 68, 69 (for example screws) are partly received in the thickness of the hull.

The support structure 540 is shaped in a manner such to maintain the point of rotation at a distance D (figure 7 or figure 16) from the hull so as to be above the body of the user (helmsman) when the latter is positioned lying down or prone or supine on the hull. In this manner, the entirety or almost the entirety of the hull can thus be exploited to house the body of the user.

The distance between said point of rotation, i.e. the lower point of the sail (figure 5), and the upper surface (deck) of the hull 2 is such to allow to easily house the bust of the user (helmsman) 51. Said distance D is typically comprised for example between 20 cm and 60 cm, more preferably between 25 cm and 45 cm. According to said first and second object of the invention, by taking the lying down or prone or supine position the user (helmsman) can navigate and manoeuvre the sail supported on the mast, both as represented in figure 5 and figure 8, with the arms thereof stretched upwards to directly grip the sail or a part thereof. The rotation of the sail with respect to the support 56 is obtained through known connection means. For example, the support may comprise a housing (not shown) rotatably and non-rotatably housed in which is the lower end of the mast. Bearing means may possible be interposed between the parts so as to reduce friction and facilitate the rotation.

The boat subject of the present invention has the sail constrained to a mast which is in turn directly inserted into the deck of a board like the one described above. Some substantial differences, with respect to the prior art, lie in the fact that the navigation and the manoeuvre are carried out with the user (helmsman) in lying down or prone or supine position having at least one part of the back resting on the deck of the hull and in the fact that the mast on which the sail (constrained sail) is fixed does not collapse into the water due to the fact that the mast is not articulated at the point of contact with the deck of the hull.

The sailboat for helming and manoeuvring lying down subject of the present invention offers numerous advantages, the main of which being not lowering the steersman when passing the foot of the sail 70, in that helming occurs in a lying (supine) position.

This sporting or sailing activity, is called Flosailing. As a sport, in flosailing the steersman is called trimmer (user) and he/she will not need to be particularly skilled to helm and adjust the sail. The trimmer will almost instinctively determine the angle of the sail that will allow him/her to travel at the desired speed (figure 5). The trimmer will determine the angle of the sail during navigation by simply taking a lying down or prone or supine position and manoeuvring the sail supported on the mast with the hands thereof stretched upwards to directly grip the sail or a part thereof (figure 5). The trimmer will adjust the sail (angle with respect to the wind) by means of a main sheet 71 spliced in the angle on the clew. Constantly the main sheet in the hand thereof, technically referred to as current manoeuvre, the trimmer will ease and haul aft the main sheet so as to adjust the angle on the bow which will be ideally formed with the direction of the wind. In the manoeuvres thereof (turning and gybe) the trimmer will use the feet and hands thereof as if they were helms.

As mentioned, the sailboat subject of the present invention has a sailing configuration in which the heel of the mast is directly inserted into the deck of the board, by means of a socket-like element or by means of a curved profile or with special mechanical solutions that allow the mast to remain vertically constrained to the board. The board preferably has an ansa lunata on the two lateral parts of the hull. Furthermore, obtained on the quickwork of the board are one or more centre boards, i.e. longitudinal appendages, or pins of various shapes and sizes; the centre boards or fins are an integral part of the shape and water lines of the board (hull). The centre boards, suitably designed, have the function of contrasting the sideslipping of the boat due to the wind.

The boat comprises a mast onto which the sail is fixed. The mast can be variously designed, made of different materials (composite, aluminium etc) or of the inflatable type to facilitate transportation. The height of the mast varies as a function of the size of the sail, which depends on the length of the board, and on the presumable size of the steersman.

The sail is luffed to the mast using various techniques and it is normally provided with one or more battens; just like all sails, it is characterised by the luff, by the leech and by the foot. The shape of the sail, the angle of the mast with respect to the hull and the shape of the sail is the fruit of a specific study and design whose sailing efficiency is aimed at helming at a lying or sitting position.

A main sheet is spliced to the clew of the sail, the other end of the main sheet is fastened against an eye bolt, arranged at the end stern, using a snap shackle. The length of the main sheet is functional to the opening of the sail same case applying to the stern wind. Should one lose grip on the main sheet, when helming (navigating) or manoeuvring, it serves as a guy. This technical solution is also a safety measure in that the sail always maintains the undeployed and the steersman can recover the main sheet through a simple gesture still in lying down or prone or supine position. The heel of the mast of the constrained sail can be fixed using two technical solutions.

A first embodiment provides for the use of a sort of handlebar (also called "brace” in this description), which is suitably folded to form a C-shape, the lower part is integrally joined (connected) with the boar (hull) by means of fixing means such as designated lead screws or other appropriate joining technological solutions. The support structure or handlebar, preferably made of steel, can also be made of other metals or composite materials. It is an actual fixed manoeuvre, provided with a socket or mast hole where the heel of the mast is inserted. The support structure or handlebar can be positioned at the centre of the hull so that the helmsman can place one leg to the right and one to the left with respect to said structure (in this case the support structure is between the legs of the steersman or trimmer).

A second embodiment provides for the use of a support 21 and 22 for example shaped to form a socket, preferably made of aluminium or stainless steel. The socket is directly fixed to the hull using fixing means, for example it is screwed to the hull using lead screws provided on the deck of the multifunctional board (or multitasking board). According to a possible embodiment the board, and boat that comprises it, can be a hull with a length, in the longitudinal extension direction X, preferably comprised between 50 and 350 cm.

The hull can be made of various suitable materials well-known in the industry, such as for example composite materials, such as glass fibre, carbon fibre, Kevlar© or the like, or thermoplastic materials or even foamed polymer material or combination of the aforementioned materials. Alternatively, the hull can also be made of wood or preferably of inflatable flexible material.

According to a preferred embodiment, the support according to the embodiment described above, can consist of two or more parts movable with respect to each other to vary, in particular, the height of the support and, thus, the height of the mast, with respect to the helmsman; thus, the orientation and inclination of the mast with respect to the helmsman who may pull the mast, and thus the sail, towards or away from himself/herself for a better helming and manoeuvring the boat.

Thus, according to an aspect of the invention the support of the sail can be adjustable height-wise. This allows varying at least the distance between the point of rotation of the sail and the upper surface of the hull. In this manner, the space between the support and the hull, where the bust of the person is positioned and the distance of the sail from the upper surface of the hull can be adapted. This allows people of different size and/or height, and thus with arms of different length to respectively take position on the hull and manoeuvre said sail in a practical and easy manner.

The support can possibly be adjusted so as to vary the position of the rotation axis moving it forward or backward along the longitudinal extension direction of the hull. Possibly, said support can also be adjusted to vary the position of the rotation axis with respect to the centre-line of the hull; in any case, the mast cannot fall into the water.

According to a possible embodiment, previously mentioned, said support contained in the support structure comprises a handlebar or brace for example C- or U-shaped lying on one side or J-shaped lying on the shorter portion. The brace extends substantially upwards on a central part of the deck positioned along the extension axis or off-centred with respect to the centre-line thereof towards the edge of the hull.

Preferably said brace is typically curved. Otherwise, as mentioned above the brace may be shaped to form an overturned L with a first portion extending in a parallel direction along the extension axis of the upper surface of the hull, and a second portion, arranged substantially orthogonal to said upper surface, which extends upwards. Said portions can possibly be connected to each other using one or more intermediate straight or curved portions. The brace can be obtained as a single element or consist of several parts integrally joined to each other or, for example if adjustable, several parts with mutual degrees of freedom. The brace can be made of a metal or a metal alloy or composite materials that offer high mechanical strength, such as carbon fibre, Kevlar© or the like. The brace can be fixed to the hull in various manners for example by means of screws, nails, rivets or the like or by gluing.

According to a preferred aspect of the invention, the brace may comprise a further coupling portion which extends from a lower end towards the centreline of the hull. In this configuration the brace is typically substantially C-shaped. Said coupling portion is preferably fixed onto the deck or housed in a seat obtained in the hull, extending along a parallel direction with respect to the longitudinal extension direction.

In this manner, the stresses that the support receives from the sail, are in turn discharged onto the hull on an extended surface. Such solution allows avoiding the creation of reinforcements in the hull, as it instead occurs in boats of the prior art, thus simplifying the construction thereof.

According to a preferred variant, the sail comprises a rigid structure, for example a frame or the like, suitable to keep the sail spread. Said rigid structure is typically integrally joined to the mast.

According to the invention, the sail can substantially be shaped to form a quadrilateral whose lower edge faces towards the user who is in a lying of supine position on the deck of the hull. Preferably said lower edge, starting from the rotation axis, i.e. From the mast, is inclined upwards by an angle comprised between 0° and 50°, more preferably between 20° and 40°, even more preferably between 25° and 35° with respect to a horizontal plane.

Basically, said hull, at the base, has a shape with two external edges along the linear extension axis X or with two external edges along the extension axis X shaped to form an ansa lunata.

According to an aspect of the invention, even the upper surface of the hull has an anatomic shape which substantially follows the curvature of the backbone of the user (helmsman).

In a preferred embodiment the sailboat for helming at a lying down position also has a console equipped with instruments suitable to provide information useful for navigation to the helmsman such as for example the speed of the wind, depth and weather conditions. The console can be power-supplied by means of sources of energy such as an accumulator or battery and even a small solar panel mounted on the upper end of the mast or on the hull.

An embodiment of a multifunctional board (or multitasking board) subject of the present invention is shown in figure 10A. In this case the multifunctional board is designed for mounting astern an acquascope 806. This allows doing snorkelling activities. In the embodiment of figure 10B, the user is lying in a supine position on the board instead.

An embodiment of a multifunctional board (or multitasking board) subject of the present invention is shown in figure 11. In this case the board can also be equipped with a sail of the windsup type entirely similar to those used for windsurf. The mast of the sail will be inserted into the deck of the board by means of a special heel of the mast of figure 9 fixed to a lead screw of the deck 121, 123. The use of a fin or vertical centreboard to be inserted into the slot is provided for windsup activities.

An embodiment of a multifunctional board (or multitasking board) subject of the present invention is shown in figure 12A. In this case the multifunctional board (or multitasking board) becomes an SUP (Stand up paddle) simply by using a special oar 810; for this type of activity it is sufficient to use astern fin and the slot is already provided for in the multifunctional board (or multitasking board).

In the embodiment of figure 12B, the board with the special accessories (seat, footrest and oar) becomes a kayak.

An embodiment of a multifunctional board (or multitasking board) subject of the present invention is shown in figure 13 provided with an adaptive accessory subject of painstaking research. In this case the board is suitable for various water activities meant for the disabled engaged in sports-therapy activities, where the disabled person or mobility-challenged person reacquires emotional energy. The board provides for quadrilateral handgrip support (for example see figure 13A) or in form of a variable height handrail (adaptive handgrip; for example see figure 13B) which will facilitate the disabled person in the movements thereof along the deck of the hull or for climbing on board the board from the water. According to this second adaptive embodiment, it should be observed that the shape of the variable-height handrail ("seat like” so to speak) allows to position the pubis of the user (for example a disabled person) for greater stability. Other two embodiments are shown in figure 23A and in figure 23B. In such embodiments, the board serves as a support raft for diving, or as an auxiliary board for rescuing bathers (for example being provided with at least one life belt or harness 814, preferably at least partially elastic).

Preferably, the embodiment of figure 23B comprises at least one pair of life belt 814 fixed at the bow, and which diverge towards the fixing points arranged at the external edges. The idea of then harness is unique, given that the with a simple gesture the lifeguard is able to fasten the person in danger, by passing the elastic strap underneath the armpits.

The invention has been described by way of non-limiting example, according to some preferred embodiments.

As regards some possible modes of use of the present boat 50 according to any one of the embodiments described herein, and the multifunctional board illustrated in this description, the following uses are provided for:

- sailing activities both in form of a constrained sail and windsup;

- activities with the use of a paddle such as stand up paddle (SUP) and kayak;

- as a game or hobby;

- for snorkelling activities, seabed exploration activities or underwater hunting activities;

- relax activities, like floating mattress;

- for rehabilitation activities in water, for example for the disabled people or for mobility-challenged people;

- for underwater activities, for example as a support bridge for scuba divers;

and/or

- sea or maritime rescue and patrol of water spaces.

The man skilled in the art may find other numerous embodiments and variants, all falling within the scope of protection outlined by the claims that follow.

The present invention also comprises the following embodiments.

A sail board (preferably with constrained sail) comprising a multifunctional board (or multitasking board) and a sail forms an object of the present invention;

- said board comprises a hull 22 which extends along a main extension direction X with a lower surface 23, designated to be partly or fully submerged in water, and an upper surface 24, suitable to accommodate a helmsman 51 in a lying down position and having the head in proximity of the stern 53;

- said sail 55 is fully or partly fixed on a mast 54 along which the axis Z extends; characterised in that

- said mast 54 is engaged in a support 56 directly fixed to the hull 22, and in that

- said hull 22 has -along the two edges thereof, which extend along the axis X - an ansa lunata 25 and an ansa lunata 26, respectively, each extending along the axis Y.

Preferably, said sailboat 50 provides for a support 56 which allows said mast 54, on which the sail 55 is fixed, to rotate with respect to the hull 22.

Preferably, said sailboat 50 provides for that said helmsman 51 can navigate and manoeuvre the boat while in a lying down position.

Preferably, said sailboat 50 provides for that the hull 22 comprises a support element 16 or a raised element 27, with respect to the surface of the deck 15 of the hull 22 and positioned in proximity of the stern 53 of the hull 22.

Preferably, said sailboat 50 provides for that said support element 16 or raised element 27, preferably a pillow 28, allows the helmsman 51 to stay in a lying down or prone or supine position during the navigation and manoeuvre.

Preferably, said sailboat 50 provides for that the support element 16 or raised element 27 can be an integral part of the hull 22 and form a single element with the hull; or, alternatively, said support element or raised element can be an element that can be mounted, positioned and adjusted at will by means of special fixing and adjustment means 230, 231 and 232 located in proximity of the stern 53.

Preferably, said sailboat 50 provides for that along the hull 22 or in positions adjacent thereto of the deck 15 of the hull 22, along the extension direction X, there be present some gripping elements, closed or open, in form of open or closed handle fixed on the hull, to facilitate helming, climbing on board, rescuing people, gripping if need be and safety in general.

Forming an object of the present invention is a multifunctional board or multitasking board comprising a hull 22 extending along a main extension direction X with a lower surface (23), designated to be partly or fully submerged in water, and an upper surface 24, suitable to accommodate a helmsman 51 , characterised in that said hull 22 has - along the two edges thereof, extending along the axis (X) - an ansa lunata 25 and an ansa lunata 26, respectively, each of which extends along the axis Y. Preferably, said multifunctional board (or multitasking board) provides for that said hull 22 comprises a support element 16 or raised element 17, with respect to the surface of the deck 15 of the hull 22, which is positioned in proximity of the stern 53 of the hull 22; said support or raised element, preferably a pillow 28, is an integral part of the hull 22 and forms a single element with the hull; or, alternatively, it can be an element that can be mounted, positioned and adjusted at will using special fixing and adjustment means 230, 231 and 232 located in proximity of the stern 53.

Preferably, said multifunctional board (or multitasking board) provides for that along the edge of the hull 22 or in positions adjacent thereto of the deck 15 of the hull 22, along the extension direction X, there be present some gripping elements, closed or open, in form of open or closed handle fixed on the hull, to facilitate helming, climbing on board, rescuing people, gripping if need be and safety in general.

The aforementioned objectives are also achieved by means of a boat, as described hereinafter. It should be observed that, with respect to the description and the embodiments outlined above, identical reference numbers will correspond to identical or equivalent components or technical characteristics.

The sailboat 50, indicated in its entirety with 50, comprises a hull 22 and a sail 55.

The hull 22 extends length-wise along an axis X which, in the example in the figure, is aligned with the (or arranged in the) centre-line plane M. The outer shape of the hull 22 is, preferably, symmetrical with respect to said centre-line plane M and extension axis X.

According to a preferred variant, the hull 22 comprises a substantially flat board 1, 2.

The board 1, 2 has a lower surface 23 normally at least partially submerged in water, and an upper surface 24 which, typically, remains uncovered.

As mentioned above, the upper surface 24 is suitable to accommodate a bust of a person lying in supine position. For a greater comfort of the person, such upper surface 24 has an undulated profile or a profile that substantially reproduces the curvature of the backbone.

At the bow 52, the hull, or the board 1, 2, is slightly raised. On the upper surface 24, at said bow 52, there is present a support element 16 or a raised element 27, projecting, suitable to support the head of the person in the area between the neck and the nape.

The lower surface 23 is instead preferably flat. According to a preferred variant, the hull 22, at the base, has a shape that approximately reproduces the shape of a human bust, head included, as observable in figure 15 or in figure 3.

According to a first embodiment (for example see figure 15), the bow 52, has a tapered profile towards the end of the hull. From the bow 52 towards the stern 53, the section of the hull 22 widens in a high central area, where the shoulders of the person rest, it narrows at a low central area 19, where the bust of the person rests at the height of the waist, and it widens once again at the area of the stern 53, where the hip of the person rests.

According to second embodiment (for example see figure 3), the bow 52, has a tapered profile towards the end of the hull. From the bow 52 towards the stern 53, the section of the hull 22 narrows at a high central area, where the legs of the person rest, it narrows at a low central area 19, where the bust of the person at the height of the waist rests, and it widens once again at the area of the stern 53, where the shoulders and the head of the person rest.

The sail 55 is connected to the hull 22 by means of a support, indicated in its entirety with 56. Said support 56 allows the sail to rotate around an axis Z substantially perpendicular to the lower surface 23 of the board 1 , 2.

As mentioned previously, the support 56 is connected to or is part of a support structure 540 which, in turn, is integrally fixed with the hull. Preferably, the mast is fixed to the hull by means of the support structure 540 which comprises the support 56.

The sail 55 is connected to the support 56 in a point of rotation R arranged at a distance D from the upper surface 24 of the hull, preferably by means of the support structure 540.

The sail 55 is generally supported by a mast 54 aligned with (preferably parallel to) said rotation axis Z.

In the embodiment illustrated in the figure 7, the support structure 540 comprises the support 56 and comprises a brace which extends from an area of the board 1 , 2 arranged in the centre-line plane M. Said brace if preferably C-shaped with a first portion which comprises a first portion which extends in a longitudinal direction and substantially perpendicular to the upper surface 24 of the hull, and a second portion, arranged substantially parallel to said upper surface 24. The two portions are preferably connected by a curved section. The brace 42 may however be differently shaped, for example it can be completely curved or comprise a straight portion obliquely extending towards the centre-line of the hull 22.

In the example illustrated in figure 16, the brace 42 is obtained as a single piece with said coupling portion 43.

For example, as shown in figure 7, the brace may however comprise several parts which can slide and/or rotate with respect to each other to vary the distance D between the point of rotation R and the upper surface 24 or possibly, or additionally, also the position of the rotation axis Z along the extension direction X.

According to an embodiment of the invention, the sail 55 comprises a rigid support structure 532 integrally joined with the main mast 54. According to a preferred variant, the sail 55 is polygonal-shaped, preferably quadrilateral-shaped.

The lower edge 70 of the sail 55 is the one arranged horizontal substantially parallel to the lower surface 23 of the hull. At said lower edge 70 the sail is equipped with two manoeuvre bars 34 arched in form of a boom.

Said manoeuvre bars 54 are preferably connected to the mast and possibly to the support structure 532.

In the variant illustrated in figures 18 to 20, the hull 22 is equipped with a hiking stick 550, that can be fixed at the stern 53. Such hiking stick 550 allows to support, and keep the legs of the user out of water too.

In the illustrated variant, said hiking 550 comprises a substantially flat board 551 preferably having a thickness identical or similar to that of the board 1, 2 of the hull 22. In this manner, the upper surface 552 of the hiking stick is connected and continuous with the upper surface 24 of the hull 22. The extension direction X of the hiking stick 550 is parallel and coincident with that of the hull 22.

In order to keep the two parts, hull 22 and hiking stick 550, joined preferably provided for are fixing means 557, such as belts, laces or the like.

The hull 22 and the hiking stick 550 are preferably made of a plastic material, typically a thermoplastic polymer or a composite material. Such means are obtained in form of a shell whose internal volume can be empty or filled with foamed material. The support 56 or the support structure 540 is instead preferably made of a metal, for example aluminium or its alloys, or it is also made of a composite material such as carbon fibre.

Preferred embodiments En of the present invention are indicated below:

E1. A sailboat 50, comprising:

- a hull 22 extending along an extension direction X with a lower surface 23, designated to be fully or partly or fully submerged in water, and an upper surface 24, suitable to accommodate at least the bust of a person in a lying down position;

- a sail 55 rotatable with respect to the hull 22 around an axis Z;

- a support 56, connected to the hull 22, suitable to support said sail 55;

wherein said support 56 is shaped in a manner such to keep the point of rotation R of the sail 55 raised with respect to the upper surface 24 of the hull so that between said upper surface 24 and said point of rotation R there can be housed the bust of the person in the aforementioned lying down position.

E2. The boat according to E1 , characterised in that said support 56 of the sail 55 can be adjusted so as to vary the distance D between the point of rotation R and the upper surface 24 of the hull 22.

E3. The boat according to E1 or E2, characterised in that said support 56 of the sail 55 can be adjusted so as to vary the position of the rotation axis Z advancing it or receding it along the extension direction X of the hull.

E4. The boat according to any one of E1-E3, characterised in that said support 56 comprises an arm 42 which extends from one lateral edge of the hull 22 towards the centre-line of the same.

E5. The boat according to E4, characterised in that the brace 42 comprises one or more parts that can slide or rotate with respect to each other and carry out both movements

E6. The boat according to any one of E1-E5, characterised in that the sail 55, at a lower edge 70 faced towards the person lying down, has manoeuvring means 34 comprising at least one manoeuvre bar, integrally joined in rotation to the sail and arranged substantially aligned with said lower edge 70, said manoeuvre bar 34 being suitable to be gripped by the person the aforementioned lying down position to rotate the sail 55 around the rotation axis Z. E7. The boat according to any one of E1-E6, characterised in that, the hull 22 - at the base - has a tapering at the bow 52 and a narrowing in the central area or part 19.

E8. The boat according to any one of E1-E7, characterised in that it comprises a hiking stick 550 that can be connected to the hull at the stern 53, with the aim of increasing the direction thereof in the extension direction X.

Lastly, forming an object of the present invention is a floating platform 800, preferably substantially circular-shaped, releasably connectable to which is a plurality of sailboats 1 (according to any one of the embodiments illustrated above), and/or multifunctional boards 1 , 2 (according to any one of the embodiments illustrated above).

According to a preferred embodiment of such floating platform 800, the main extension direction X of one or more hulls 22 is substantially parallel to a radial direction P of said platform. In other words, upon fixing a substantially circular-shaped central area or centre C of the platform, the extension direction X of the hull 22 or of the plurality of hulls will be substantially parallel to the radii passing at the centre C of such platform 800.

According to an embodiment, the floating platform 800 comprises mooring means 802 for the releasable connection of the plurality of sailboats 50 or of the multifunctional boards 1 , 2 to the platform 800. Preferably, the mooring means 802 comprise at least one mooring ring fixed to the platform.

According to another embodiment, the floating platform 800 comprises gripping means 804 for gripping (and optionally for transporting), the platform 800. Preferably, the gripping means 804 comprise one or more grips or handles. For example, the gripping means 804 could be arranged on an external circumference of the platform 800.

According to a further embodiment, the floating platform 800 comprises means for anchoring the platform to a seabed. Preferably, the anchoring means comprise at least one rope or at least one chain fixed to the platform 800 on the one side, and anchored to the seabed on the other side.

According to possible modes of use of the floating platform 800 according to the embodiments outlined above, such platform could be used for carrying out teaching activities; and/or activities for renting boats 50 and/or multifunctional board 1 , 2. Lastly, with particular reference to figure 25, it should be observed that a so-called“human sailef is based on the board helmed from a lying down position of the present invention, but in the absence of the board in that the body of the steersman or user 51 serves that purpose.

In other words, in the embodiment of figure 25, the mast 54 and the sail 55 are constrained to the body of the steersman or user 51 , thus the latter serving as a board or floater.

According to an embodiment, the steersman or user 51 is constrained to the mast 54 by means of a belt 561 , which tightens around the waist and/or abdomen of the helmsman/user.

Preferably, the bely 561 comprises a mast-holder plate 560 on which the heel of the mast rests. Hence, the mast-holder plate 560 serves as a base for the mast 54 and, according to an advantageous aspect, it protects the body of the steersman/user against the mechanical stresses of the sail 55, transmitted to the body of the steersman 51 through the shaft 54.

According to another embodiment, the "human sailer” also comprises a main sheet 562 for the sail 55, constrained on one end to the sail and grippable on the other end by the user 51 to direct the sail in the wind.

Innovatively, the present invention allows to achieve the pre-set objectives.

Advantageously, the side of the hull opposite to the one where the support is connected remains free so as to allow the user to take position on the board easily, same case applying to allowing him/her to quickly release himself/herself if need be, for example should the boat capsize in water.

Advantageously, thanks to the support according to an embodiment of the present invention, the sail can also be positioned in the central area of the hull usually occupied by the body of the user.

Advantageously, the board subject of the present invention has the advantage lying in the fact that it can be used in various water sports activities, even should such activities require supplementary accessories or equipment. Advantageously, the board subject of the present invention has high stability in water, hence it can be used for water or underwater sports (even in the presence of specific accessories), for simple water relaxation activities, for rehabilitation activities (water therapy), for rescuing bathers. Advantageously, the multifunctional board is provided with couplings which - through accessories or kits (seat 808, footrest, paddle or oar 810, diver down flag 812 for scuba diving, and/or acquascope 806) - can be transformed into a board for different purposes (for example into a kayak, into a floating mattress), where the stability and manoeuvrability of such board guarantee good quality of navigation. Advantageously, the multifunctional board subject of the present invention is configured in a manner such to allow the user thereof to move it in water rowing with the hands.

Advantageously, the presence of one or more life belts with three anchoring points allows to harness the person being rescued, it is not cumbersome, and it is always available.

The invention has been described by way of non-limiting example, according to some preferred embodiments. The man skilled in the art may find other numerous embodiments and variants, all falling within the scope of protection outlined by the claims that follow.

LIST OF REFERENCE NUMBERS

1, 2 multifunctional board, multitasking board or board

11, 22 hull

12, 23 quickwork, submerged part of the hull, or lower surface

13, 24 deadwork, dry portion of the hull, or upper surface 14, 15 deck

16 support element

17 seat for housing the coupling portion

18 seats for pins

19 central area or part

25 ansa lunata

26 ansa lunata

27 raised element

28 pillow

31 , 32, 33, 34 fluid threads

42 mast-hoder handlebar or brace

42a first portion of the brace

42b second portion of the brace

45, 46 centre boards, vertical and longitudinal appendages, or fins

45a, 46a slot or fissure

50 sailboat

51 person, helmsman, steersman or user

52 bow

53 stern

54 mast

55 sail

56 mast-holder support or socket

61 , 62, 64, 66 element

63, 65, 67 joining element

68, 69 fixing means

70 foot or lower edge of the sail

71 , 562 main sheet

90 fixing device or means

91 knob

92 paddle

93 tulip-like socket

94 base element or support base

110, 111 , 112, 113, 114, 115 closed elements

125, 126, 127 fixing means

221 , 222, 223, 224, 225, 226 closed elements

230, 231 , 232 fixing and adjustment means

532 sail support structure

534 sail manoeuvre bars

540 support structure

543 arm coupling portion

550 hiking stick

551 board of the hiking stick

552 upper surface of the hiking stick

553 inner edge of the hiking stick

554 free end of the hiking stick 555 pins

556 lateral edges of the hiking stick

557 fixing means

560 mast-holder plate

561 belt

700 acquascope holder

800 floating platform, floating island or floating atoll

802 mooring means

804 gripping means

806 acquascope

808 seat

810 paddle or oar

812 diver down flag

814 life belt or harness

a angle

A - A section plane

B - B section plane

C centre of the platform

D distance between the point of rotation and the upper surface of the hull or the board

M centre-line plane

P radial direction

R point of rotation

X length-wise extension axis of the hull, or longitudinal extension

axis/direction, or (main) extension direction

Y transversal extension direction, or smaller size of the hull

Z rotation axis