TECHNICAL FIELD

[0001 ] The present invention relates to systems that permit access to surfaces of bodies of water,

[0002] The invention has been devised particularly, although not necessarily solely, in relation to platforms for permitting displacement of personnel and goods between vessels and a shore of a body of water.

BACKGROUND ART

[0003] The following discussion of the background art is intended to facilitate an understanding of the present invention only. The discussion is not an acknowledgement or admission that any of the material referred to is or was part of the common general knowledge as at the priority date of the application.

[0004] Egress on and off vessels from land and a fixed structure is inherently dangerous when subject to movement by waves, wind and tide, in particular because of the relative movement between vessels, pontoons and gangways. As pontoons take up sea room they are often built with minimal beam. Constant movement between these objects mean there is little ability to install handrails without developing potential crush points in adverse conditions. In these circumstances it's all too easy for untrained or inexperienced personnel to slip or trip and find themselves in the water, where they risk injury.

[0005] Access on and off vessels in tidal zones, and in particular in large tidal zones, is an operating necessity. Without safe access, considerable amounts of working time can be lost due to bad weather conditions. This adds considerable expense to companies operating in the marine environment.

[0008] Furthermore, relatively large tidal ports, simply because of their geographic locations, are often prone to extreme weather events such as cyclones, king tides and overtopping. Any equipment installed in these ports must be highly engineered and protected. A vessel should be able to remain in position, safely moored 24/7, during these occurrences without crew on board.

[0007] Numerous access designs have been developed to cater for tidal range movement. From fixed systems - such as ladders and steps that submerge - to roiling gangways placed on a floating pontoon. When floating system are used gangways move perpendicular to the pontoons that rise and fail vertically with the tide. To prevent movement of the pontoon they are then secured around fixed piles with numerous yokes. Most floating access systems require dredged pockets to accommodate the movement of each pontoon. When a pontoon and vessel use the same pylon for tidal movement, lines can become damaged during vertical movement between the yoked systems. Because of this potential damage, separate mooring pylons are normally built well clear of the pontoon to ensure the continuity of mooring lines with evenly distributed line loads. Moreover, the use of pontoons impedes the use of pile protection, such as stainless steel pile bands or tidal runners that reposition with tidal movement. Both can strengthen and significantly reduce pile wear and eventual replacement if not impeded by yoked pontoons.

[0008] Infrastructures can be expensive when pontoons are used, they take up expensive real-estate in areas with limited or restricted sea room. Smaller boarding structures can save considerable capital if safe access is still made available when the vessel is moored alongside. AH existing access systems now in use have constraints that should be addressed but are often seen as too hard, costly or complex to engineer out. The constraints that must be considered when engineering out these issues are: a. Access should be available 24/7 at any tidal height with full handrail protection built around the entire platform allowing 3 points of contact at ail times while in use.

b. The access platform should remove the gaps between the vessel and platform itself when boarding.

c. The boarding platform should remain stable in the horizontal plane and not move unevenly as pontoons do when yoked to piles or during tidal range movement d. Mooring piles should be protected from damage; if no pile yoked pontoon is installed piles can be protected from mooring line damage when secured.

e. The access platform itself should be able to remain safely in position during extreme weather events such as cyclones and overtopping without removal from the operational area they are situated, not removed from their location or secured to a vessel or barge on a mooring

f. Is stable, stays in one fixed horizontal plane 24/7 while moving up and down in the vertical plane.

g. Have as few moving parts as possible, what parts do move must be accessible and easily serviced.

h. Is not damaged if submerged.

i. Can be protected from vessel impact by the design of piles and infrastructure, j. Can be made of material less affected by corrosion.

k. Can be either powered (no fixed pontoon) or unpowered (small fixed pontoon) I. should reduce the cost of any pen by:

i. Reduce dredging costs

ii. Reduce the overall pen size.

iii. Reduce harbour protection barriers required.

iv. Reduce piles required

v. Reducing ongoing maintenance costs.

vi. Removethe need to be replaced every 8 to 10 years

[0009] As such, a new concept must be designed that removes the need for a lot of redundant infrastructure while improving safety and reducing maintenance costs.

[0010] It is against this background that the present invention has been developed.

SUMMARY OF INVENTION

[001 1 ] According to a first aspect of the invention there is provided an access system for transferring goods and personnel between at least one vessel and a shore of a body of water, the access system comprising a first platform extending from the shore to a particular location above the body of water, a second platform comprising a first section attached to the first platform, and a second section having a first end pivotally attached to the first section, and a second end adapted to allow transfer of goods and personnel between the at least one vessel and the surface of the body of water.

[0012] Preferably, at least a portion of the first section is slideably attached to the first platform. 0013] Preferably, the second platform comprises a ladder.

[0014] Preferably, the ladder is adapted to provide support to the personnel at any angle of inclination of the ladder.

[0015] Preferably, the access system comprises a third platform attached to the second end of the second section of the second platform, the third platform being adapted to allow transfer of goods and personnel between at least one vessel and the third platform.

[0018] Preferably, the third platform comprises at least one ramp adapted to be displaced between (1 ) its deployed condition allowing transfer of goods and personnel between the at least one vessel and the third platform, and (2) a stored condition,

[0017] Preferably, the third platform is adapted to be substantially in the horizontal position.

[0018] In a first arrangement, the third platform is displaced using powered drive means such as lifts, winches, hydraulic systems, among others. This first arrangement is referred to as the powered arrangement.

[0019] In a second arrangement, the third platform is displaced using the movement of the water level of the body of water due to, for example, rising and failing tides.

[0020] Preferably, in this second arrangement, the third platform is adapted to be received by the body of water. This second arrangement is referred to as the unpowered arrangement.

[0021 ] Preferably, in this second arrangement, the third platform comprises buoyancy means to permit floating of the third platform on the body of water.

[0022] Preferably, in a third arrangement, the third platform including the buoyancy means may be displaced through powered drive means.

[0023] In alternative arrangements, the access assembly may be counter-weighted. For example, the second section 18 may be biased so that the second For example, the second section may be biased so that the second section always either (1 ) returns to the retracted condition being level with the first platform or (2) returns towards the vessel so that the third platform may be mounted on the vessel to allow goods and personnel transfer.

[0024] In these alternative arrangements, ballast may be attached at particular locations of the second section via a wire pulley to bias the movement of the second section.

[0025] Preferably, the access system further comprises a mooring area for receiving vessels and securing vessels.

[0026] Preferably, the mooring area comprises an area of the body of water adjacent to the first platform.

[0027] Preferably, the mooring area comprises a plurality of pylons for supporting at least one vessel within the mooring area.

[0028] Preferably, the mooring area comprises a plurality of second pylons defining at least one gap for receiving the second end of the second platform.

[0029] Preferably, there are at least one pair of second pylons arranged in a spaced apart relationship with respect to each other for receiving the second end of the second platform.

[0030] Preferably, tidal runners may be attached to the pylons for added structural strength and to protect pylons from mooring line damage.

[0031 ] Preferably, the tidal runner comprises a mooring buoy adapted to be selectively displaced between an upper position and a lower position along the tidal runner.

[0032] Preferably, each tidal runner comprises a channel adapted to receive the mooring buoy. [0033] Preferably, the channel comprises an open end for receiving the mooring buoy.

[0034] Preferably, the tidal runner comprises a stopper spaced apart from the open end of the channel to impede exit of the mooring buoy from the channel.

[0035] Preferably, the mooring buoy comprises a base for insertion in the channel and adapted to slide along the channel of the tidal runner, and a replaceable wear strip adapted to reduce replacement of parts subject to wear.

[0038] Preferably, the access system further comprises a fourth platform having a first end attached to the first platform to provide access between the first platform and the fourth platform, and a second end supported by the second pylons at locations opposite to the surface of the body of water.

[0037] Preferably, the access system further comprises means for selectively displacing the third platform between a lowered position and a raised position.

[0038] Preferably, the means for selectively displacing the third platform comprises a winch system having a winch and a tether having an end operative!y connected to the winch, and another end connected to the third platform.

[0039] Preferably, the winch is mounted onto the fourth platform at a location overhead the third platform.

[0040] Preferably, the access system further comprises a first support frame having an end pivot pivotaily attached to the fourth platform, and another end pivotaily attached to the second platform,

[0041 ] Preferably, the access system further comprises a second support frame having an end pivot pivotaily attached to the third platform, and another end pivotaily attached to the first section of the second platform.

[0042] Preferably, the second support frame extends substantially parallel to the lower surface of the ladder. [0043] In an alternative arrangement, the access system further comprises a first frame structure attached to the first platform.

[0044] In this particular alternative arrangement, the first frame structure comprises a lower frame having a side attached to the first platform to provide access between the first platform and the first frame structure, and another side facing the second platform.

[0045] In this particular alternative arrangement, the access system further comprises a first support frame having an end pivot pivotally attached to the first frame structure, and another end pivotally attached to the second platform,

[0046] In this particular alternative arrangement, the access system further comprises a second support frame having an end pivot pivotally attached to the third platform, and another end pivotally attached to the first section of the second platform.

[0047] In this particular alternative arrangement, the second support frame extends substantially parallel to the upper surface of the ladder of the second platform.

[0048] In a particular configuration of this particular alternative arrangement, the second support frame is attached to the second platform in such a manner that the second support frame defines handrails of the ladder.

[0049] In this particular alternative arrangement, the second frame structure comprises a first end pivotally attached to the second platform.

[0050] Preferably, the first end is substantially attached at the centre of the second section.

[0051 ] Preferably, the second frame structure comprises a second end pivotally attached to the first frame structure

[0052] Preferably, the second end is attached at a lower portion of the first frame structure

[0053] Preferably, the second frame structure comprises a second end pivotally attached to the first frame structure. [0054] Preferably, the second end is attached at a lower portion of the first frame structure.

[0055] Preferably, the second frame structure comprises two triangular frames; each triangular frame having a first end for attachment to the second platform and a second end for attachment to the first frame structure.

[0056] Preferably, the triangular frames are spaced part with respect to each other; each first end of the triangular frames being attached to a side of the second platform.

[0057] Preferably, the first frame structure comprises rectangular frames spaced apart with respect to each other; each rectangular frame having a lower end for attachment of the triangular frames.

[0058] Preferably, the rectangular frames are spaced part with respect to each other for receiving the third platform when the access assembly is moved into the retracted condition.

[0059] In one arrangement, the second platform extends substantially parallel to the first platform. This particular arrangement allows bow or stern access to the vessel.

[0060] Preferably, the first section of the second platform comprises a frame section for attachment to the first platform.

[0061 ] Preferably, the first section further comprises a panel siideabiy attached to the frame section of the second platform and attached to the first end of the second platform.

[0062] Preferably, the frame section comprises an access to allow transfer of goods and personnel between the second platform and the first platform.

[0063] Preferably, the frame section comprises a distal section for receiving a distal portion of the panel.

[0064] Preferably, the panel comprises a barrier at the distal portion. [0065] Preferably, there is provided at least one second pylon adjacent to at least one pylon supporting the first platform defining a gap for receiving the second end of the second platform.

[0066] Preferably, the mooring area comprises four first pylons defining an area for receiving the vessel.

[0067] Preferably, tidal runners are attached to the pylons for protection of the pylons.

[0068] Preferably, the tidal runner comprises a mooring buoy adapted to be selectively displaced between an upper position and a lower position along the tidal runner.

[0069] Preferably, each tidal runner comprises a channel adapted to receive the mooring buoy.

[0070] Preferably, the mooring buoy comprises a base for insertion in the channel and sliding along the channel of the tidal runner, and a replaceable wear strip adapted to receive reduce replacement of parts subject to wear

[0071 ] In an alternative arrangement the second platform extends perpendicular to the first platform. This particular arrangement allows single and double access to the vessel depending on the vessels preferred mooring arrangements.

[0072] Preferably, the first platform is adapted to slideably receive at least a portion of the first section of the second platform.

[0073] Preferably, the first platform comprises a frame section extending perpendicular to the first platform and opposite to the second platform, the frame section being adapted to receive a distal end of the first section of the second platform.

[0074] Preferably, the mooring area comprises an area of the body of water adjacent to the first platform. This particular arrangement allows access to the vessel depending on pre-set mooring arrangements. [0075] Preferably, the mooring area comprises four first pylons defining an area for receiving the vessel, and two pairs of second pylons arranged in a spaced apart relationship defining an area surrounded by a front gap, a rear gap and a pair of side gaps.

[0078] Preferably, the second end of the fourth platform is supported by the two pairs of second pylons

[0077] Preferably, the front gap facing the first platform is adapted to receive the second end of the second platform

[0078] Preferably, the area surrounded by the gaps defined by the second pylons is adapted to receive the third platform,

[0079] Preferably, the side gaps are adapted to receive ramps of the third platform to allow transfer of goods and personnel between the third platform and the vessel.

[0080] In an alternative arrangement the mooring area comprises an area of the body of water distal to the first platform. This alternative arrangement allows bow or stern access to the vessel.

[0081 ] Preferably, the mooring area comprises a first pair of first pylons and a second pair of first pylons defining the mooring area, and two second pylons arranged in a spaced apart relationship.

[0082] Preferably, the first pair of pylons and the two second pylons define an area for receiving the third platform.

[0083] Preferably, the fourth platform is supported the two second pylons.

[0084] According to a second aspect of the invention there is provided an access assembly for providing access to a body of water from a first platform located above the body of water, the access assembly comprising a second platform comprising a first section having a portion adapted to be slideabiy attached to the first platform, and a second section having a first end pivotally attached to the first section and a second end adapted to allow transfer of goods and personnel between the first platform and the body of water.

[0085] Preferably, the first section of the second platform comprises a frame section for attachment to a side of the first platform.

[0086] Preferably, the first section of the second platform further comprises a panel slideably attached to the frame section, and the panel being pivotaiiy attached to the first end of the second section of the second platform.

[0087] Preferably, the frame section comprises an access to allow transfer of goods and personnel between the second platform and the first platform.

[0088] Preferably, the frame section comprises a distal section for receiving a distal portion of the panel.

[0089] Preferably, the panel comprises a barrier at the distal portion.

[0090] Preferably, the access assembly further comprises a third platform, the second end of the second platform being pivotaiiy attached to the third platform.

[0091 ] Preferably, the third platform is adapted to be substantially in the horizontal position.

[0092] In a first arrangement, the third platform is displaced using powered drive means such as lifts, winches, hydraulic systems, among others.

[0093] In a second arrangement, the third platform is displaced using the displacement of the water level of the body of water due to, for example raising and failing tides.

[0094] Preferably, in this second arrangement, the third platform is adapted to be received by the body of water.

[0095] Preferably, in this second arrangement, the third platform comprises buoyancy means to permit floating of the third platform on the body of water for, for example, adjustment of the location of the third platform during selective raising or lowering of the water level of the body of water. This arrangement is particular advantageous because it allows the third platform to adjust to the tides of the body of water

Preferably, in a third arrangement the third platform including the buoyancy means may be displaced through powered drive means.

[0098] In alternative arrangements, the access assembly may be counter-weighted. For example, the second section 18 may be biased so that the second For example, the second section may be biased so that the second section always either (1 ) returns to the retracted condition being level with the first platform or (2) returns towards the vessel so that the third platform may be mounted on the vessel to allow goods and personnel transfer.

[0097] In these alternative arrangements, ballast may be attached at particular locations of the second section via a wire pulley to bias the movement of the second section.

[0098] Preferably, the access assembly further comprises a fourth platform having a first end attached to the first platform to provide access between the first platform and fourth platform, and a second end distal to the first platform.

[0099] Preferably, the access assembly further comprises a supporting structure distal to the first platform and adapted to receive the second end of the fourth platform.

[00100] Preferably, the access assembly further comprises means for selectively displacing the third platform between a lowered condition and a raised condition.

[00101 ] Preferably, the means for selectively displacing the third platform comprises a winch system having a winch and a rope having an end operatively connected to the winch, and another end connected to the third platform.

[00102] Preferably, the winch is mounted onto the fourth platform at a location overhead the third platform. [00103] Preferably, the access assembly further comprises a first support frame having an end pivot pivotaily attached to the fourth platform, and another end pivotaily attached to the second platform.

[00104] Preferably, the access assembly further comprises a second support frame having an end pivot pivotaily attached to the third platform, and another end pivotaily attached to the first section of the second platform.

[00105] Preferably, the second support frame extends substantially parallel to the lower surface of the ladder

[00106] In an alternative arrangement, the access system further comprises a first frame structure attached to the first platform.

[00107] In this particular alternative arrangement, the first frame structure comprises a lower frame having a side attached to the first platform to provide access between the first platform and the first frame structure, and another side facing the second platform.

[00108] In this particular alternative arrangement, the access system further comprises a first support frame having an end pivot pivotaily attached to the first frame structure, and another end pivotaily attached to the second platform.

[00109] In this particular alternative arrangement, the access system further comprises a second support frame having an end pivot pivotaily attached to the third platform, and another end pivotaily attached to the first section of the second platform.

[001 10] In this particular alternative arrangement, the second support frame extends substantially parallel to the upper surface of the ladder of the second platform.

[001 1 1 ] In a particular configuration of this particular alternative arrangement, the second support frame is attached to the second platform in such a manner that the second support frame defines handrails of the ladder.

[001 12] In this particular alternative arrangement, the second frame structure comprises a first end pivotaily attached to the second platform. [001 13] Preferably, the first end is substantially attached at the centre of the second section.

[001 14] Preferably, the second frame structure comprises a second end pivotaiiy attached to the first frame structure

[001 15] Preferably, the second end is attached at a lower portion of the first frame structure

[001 16] Preferably, the second frame structure comprises a second end pivotaiiy attached to the first frame structure.

[001 17] Preferably, the second end is attached at a lower portion of the first frame structure.

[001 18] Preferably, the second structure comprises two triangular frames; each triangular frame having a first end for attachment to the second platform and a second end for attachment to the first frame structure.

[001 19] Preferably, the triangular frames are spaced part with respect to each other; each first end of the triangular frames being attached to a side of the second platform.

[00120] Preferably, the first frame structure comprises rectangular frames spaced apart with respect to each other; each rectangular frame having a lower end for attachment of the triangular frames.

[00121 ] Preferably, the rectangular frames are spaced part with respect to each other for receiving the third platform when the access assembly is moved into the retracted condition.

[00122] In one arrangement, the second platform extends substantially parallel to the first platform.

[00123] In an alternative arrangement the second platform extends substantially perpendicular to the first platform. [00124] In this alternative arrangement, the first platform is adapted to slideabiy receive at least a portion of the first section of the second platform.

[00125] Preferably, the first platform comprises a frame section adapted to receive the plate.

[00126] Preferably, the fourth platform is adapted to receive the second platform.

[00127] Preferably, the fourth platform comprises an indentation for receiving the first section of the second platform.

[00128] Preferably, the first platform comprises a frame section extending perpendicular to the first platform and opposite to the second platform, the frame section being adapted to receive a distal end of the first section of the second platform.

[00129] Preferably, the fourth platform comprises an opening for receiving the first section, the opening being connected to the frame section of the first platform.

[00130] Preferably, the second platform comprises a ladder.

[00131 ] Preferably, the ladder is adapted to provide support to the personnel at any angle of inclination of the ladder.

[00132] According to a third aspect of the invention there is provided a tidal runner for attachment to a pylon for protection thereof, the tidal runner comprising a body having a channel, and a mooring buoy adapted to be received by the channel for selective displacement between an upper position and a lower position along the tidal runner.

[00133] Preferably, the channel comprises an open end for receiving the mooring buoy.

[00134] Preferably, the tidal runner comprises a stopper spaced apart from the open end of the channel to impede exit of the mooring buoy from the channel. [00135] Preferably, the mooring buoy comprises a base for insertion in the channel and sliding along the channel of the tidal runner, and a replaceable wear strip adapted to receive vessel impact.

BRIEF DESCRIPTION OF THE DRAWINGS

[00138] Further features of the present invention are more fully described in the following description of several non-limiting embodiments thereof. This description is included solely for the purposes of exemplifying the present invention. It should not be understood as a restriction on the broad summary, disclosure or description of the invention as set out above. The description will be made with reference to the accompanying drawings in which:

Figure 1 is a top perspective view of a first arrangement of an access system in accordance with a first embodiment of the invention in use.

Figure 2 is perspective view of a detail of the lower portion a first arrangement of the access system shown in figure 1 ;

Figure 3 is a side perspective view of the first arrangement of the access system shown in figure 1 in the lowered condition;

Figure 4 is a side perspective view of the first arrangement of the access system shown in figure 1 in the intermediate condition;

Figure 5 is a side perspective view of the first arrangement of the access system shown in figure 1 in the raised condition;

Figure 6 is a side perspective view of a second arrangement of the access system in accordance with the first embodiment of the invention in the lowered condition;

Figure 7 is a side perspective view of an access assembly shown in figure 6 in the lowered condition; Figure 8 is a side perspective view of the first arrangement of the acc assembly shown in figure 1 in the lowered condition;

Figure 9 is a rear side perspective view of the access assembly shown in figure 7 in the lowered condition;

Figure 10 is perspective view of a detail of the access assembly shown in figure

9;

Figure 1 1 is perspective view of a detail of the first arrangement of the access assembly shown in figure 10 in the raised condition;

Figure 12 is a front view of the first arrangement of the access platform shown in figure 7 in the lowered condition;

Figure 13 is a side perspective view of the access assembly shown in figure 10;

Figure 14 is a top perspective view of a first arrangement of an access assembly in accordance with a second embodiment of the invention in use;

Figure 15 is a top perspective view of a close up of the first arrangement of the access assembly in use shown in figure 14;

Figure 16 is a front perspective view of the first arrangement of the access assembly in use shown in figure 14;

Figure 17 is a close up of the first arrangement of the third platform of the access system;

Figure 18 is a side perspective view of another arrangement of an access system in accordance with a second embodiment of the invention in use;

Figure 19 is a close up of another arrangement of the access platform in use shown in figure 18;

Figure 20 is perspective view of a tidal runner in accordance with a fifth embodiment of the invention; Figure 21 is perspective view of a tidal insert in accordance with the fifth embodiment of the invention for use in conjunction with the tidal runner shown in figure 20;

Figure 22 is a perspective view of a particular arrangement of an access system in accordance with a sixth embodiment of the invention in the retracted condition;

Figure 23 is a perspective view of the arrangement of the access system shown in figure 22 in an intermediate condition;

Figure 24 is a perspective view of the arrangement of the access system shown in figure 22 in a lowered condition;

Figure 25 is a front perspective view of the arrangement of the access system shown in figure 24;

Figure 26 is a side perspective view of the arrangement of the access system shown in figure 24; and

Figure 27 is a close up perspective view of the arrangement of the access system shown in figure 24,

[00137] It should be noted that the figures are schematic only and the location and disposition of the components can vary according to the particular arrangements of the embodiments of the present invention as well as of the particular applications of the present invention,

DESCRIPTION OF EIVIBOD!IVIENT(S)

[00138] The figures 1 to 6, 14 to 19 and 22 to 27 depict, respectively, particular arrangements of access systems 10 in accordance with first, second and sixth embodiments of the invention.

[00139] The access system 10 allows transfer of goods and personnel between at least one vessel 24 and a shore of a body of water. The access system 10 comprises a first platform 12 extending from the shore to a particular location above the body of water. A mooring area 13 is defined adjacent to the first platform 10. The mooring area 13 is defined by a plurality of pylons 25 arranged in a spaced apart relationship with respect to each other. The mooring area 13 allows confinement of one or more vessels 24 to permit the transfer of goods and personnel between the vessel 24 and the first platform 12.

[00140] The access system 10 comprises an access assembly 1 1 attached to the first platform 12.

[00141 ] The access assembly 1 1 comprises a second platform 14 having a first section 16 and a second section 18. The first section 16 is attached to the first platform 12. The second section 18 comprises a first end 20 pivotaily attached to the first section 16, and a second end 22 adapted to allow transfer of goods and personnel between a vessel 24 and the second end 22 of the second platform 14 .

[00142] The second section 18 of the second platform 14 comprises a ladder 26. The ladder 26 is adapted to provide support to the personnel at any angle of inclination of the ladder. The fact that the ladder is adapted to provide support to the personnel at any angle of the ladder's inclination is particularly advantageous. This is because, as will be described with reference to the method of operation of the access assembly 1 1 , the second section 18 is adapted to pivot. The fact that second section 18 is adapted to pivot allows the second 22 of the second platform to undergo selective displacement between a raised position and a lowered position.

[00143] Referring to figure 2, the second platform 14 comprises a third platform 28. The third platform 28 is attached to the second end 22 of the second platform 14. In this manner, the third platform 28 is displaced between a raised condition and lowered condition during pivoting of the second section 18. The third platform 28 comprises a ramp 94 for accessing the vessel 24 from the third platform 28.

[00144] In the lowered condition the third platform 28 permits access to and from the vessel 24 as is depicted in, for example, figure 1 . In the raised condition, the third platform 28 is adjacent to the first platform 12 as is shown, in for example in figure 5. The third platform 28 may be retrieved to the raised condition during the occurrence of cyclones. In this manner, the second and third platform 14 and 28 of the access assembly 1 1 is located in the horizontal condition and remain above the king tidal zone. [00145] After passage of the cyclone, the third platform 28 may be re-deployed to the lowered position by pivoting of the second platform 14. Raising and lowering of the second and third platform 14 and 28 may be done by a winch system to be described at a later stage.

[00146] Referring now to figure 3 to 5.

[00147] Figures 3 to 5 shows a first arrangement of the access system 10 in accordance with a first embodiment of the invention. In this first arrangement, the third platform 28 is driven via drive means (referred to as powered drive means) such as lifts, winches, hydraulic systems, among others.

[00148] Figures 3 to 5 show the access assembly 1 1 of the access system 10 in three different conditions. In figure 3, the third platform 28 is depicted in the lowered condition; in this condition the third platform 28 may be used to provide access to a vessel moored adjacent the access system 10.

[00149] In figure 4, the third platform 28 is depicted in an intermediate condition between the lowered condition shown in figure 3 and the raised condition shown in figure 5. The intermediate condition may be any position between the lowered and raised condition. The third platform 28 may be located in this condition during the process of lowering and raising the platform using the winch system mentioned above.

[00150] Referring to figure 6.

[00151 ] Alternatively, the third platform 28 may be displaced due to changes in the level of the surface of the body of water due to, for example, tides. For this, the third platform 28 may be adapted to float on the water surface of the body of water allowing the third platform 28 to be raised or lowered depending of the height of the water level of the body of water varying due to, for example, the tides.

[00152] In particular, as will be described with reference to the method of operation of the access system 10, the position of the third platform 28 with respect the first platform 12 may be adjusted depending on the level of the water surface of the body of water. [00153] For example, as shown in figure 6, in a second arrangement of the access assembly 1 1 the third platform 28 may comprise buoyancy means 30 that permit adjustment of the position of the third platform 28 in accordance to water level of the body of water during, for example, falling and rising of tides.

[00154] In alternative arrangements, the access assembly 1 1 may comprise the third platform 28 including the buoyancy means as well as the powered drive means for selectively displacing the third platform 28 between the raised condition and the lowered condition; in this manner, the third platform 28 may be raised prior occurrence of cyclonic events and deployed after passage of the cyclone as well as the platform 28 may adjust to the water level of the body of water during movement of the water due to, for example, falling and rising tides.

[00155] The third platform 28 moves vertically during its selective displacement between the lowered condition and raised condition. This can be appreciated in figures 3 to 5. The vertical movement of the third platform 28 is possible due the fact that a particular section of the second platform 14 is adapted to slide along the first platform 12 of the access system. In this manner, as the third platform 28 is displaced between the lowered and raised condition, the first section 16 is moved along the first platform 12 allowing the third platform 28 to move vertically between the raised and lowered condition. This process is best shown in figures 7 to 13.

[00158] Figures 7 to 13 depict the access system 10 in accordance with the first embodiment of the invention. In particular, in these figures is depicted the third platform 28 of the access assembly 1 1 being displaced between the lowered position and the raised position.

[00157] As shown in figure 7, the second section 18 of the second platform 14 is pivotaily attached to (1 ) the first section 16 of the second platform 14 and (2) to the third platform 28.

[00158] As mentioned earlier, a particular section of the second platform 14 is adapted to slide along the first platform 12 to allow the vertical movement of the third platform 28. [00159] In particular, as shown in figures 9 to 1 1 , the second platform 14 comprises a first section 16, The first section 16 of the second platform 14 comprises a frame section 32 for attachment to a side of the first platform 14. Furthermore, the first section 16 of the second platform 14 comprises a panel 34 slideably attached to the frame section 32 so that the plate 34 may slide along the first platform 12. The panel 34 is pivotally attached to the first end 20 of the second platform 14. In this manner during pivotal movement of the second platform the panel 34 may slide into the frame section 32,

[00160] The frame section 32 comprises an open end 36 and a closed end 38. The open end 36 allows inserting the panel 34 into the frame section 32 during assembly of the access assembly 1 1 . The frame section 32 is longer than the panel 34. This allows the panel 34 to be selectively displaced between a first condition and second condition.

[00161 ] Further, the panel 34 comprises a proximal end 40 attached to the second section 18 of the second platform 14, and a distal end 42 which location within the frame section 32 varies depending on the location of the third platform 28.

[00162] When the third platform 28 is located in the lowered condition the proximal end 40 of the panel 34 is located at the open end 36 of the frame section 32. This is best seen in figure 9 and 10. When the third platform 28 is located in the raised condition the distal end 42 of the panel 34 is located at the closed end 38 of the frame section 32. This is best seen in figure 13.

[00163] The distal end 42 of the panel 34 comprises a barrier 44 to impede access beyond the distal end 42 of the panel 34. The location of the barrier 44 is also dependent on the particular position of the third platform 28. In figure 10, the barrier 44 is shown separated from the closed end 38 of the frame section 32 - in this position the third platform 28 is located in the lowered position. In figure 1 1 , the barrier 44 is shown adjacent the closed end 38 of the frame section 32 - in this position the third platform 28 is located in the raised position

[00164] Furthermore, the frame section 32 comprises barriers 46 extending longitudinally along the sides of the frame section 32. This impedes the personnel from moving beyond the frame section 32. The barrier 46 comprises an open section 48 to allow movement between the frame section 32 and the first platform 12. [00165] Similarly, the first, second and third platform comprises barriers including handrails impeding the personnel from falling off the access assembly.

[00168] Referring now to figures 12 and 13.

[00167] The access assembly 1 1 further comprises a fourth platform 50 having a first end 52 attached to the first platform 12 to provide access between the first platform 12 and fourth platform 50, and a second end 54 distal to the first platform 12. The fourth platform 50 is located such that it is overhead the third platform 28. The second end 54 of the fourth platform 50 may be supported by a support structure such as one or more pylons 27.

[00168] The access assembly 1 1 further comprises means for selectively displacing the third platform 28 between the lowered condition and the raised condition. The means for selectively displacing the third platform 28 comprises a winch system having a winch 56 and a tether 56 having an end operativeiy connected to the winch 56, and another end connected to the third platform 28 through, for example, an eye- fastener 57 - see figure 8 and 17.

[00189] The winch system allows selectively displacing the third platform 28 between the lowered condition and the raised condition. The winch system allows retrieval of the third platform 28 from the lowered condition to the raised condition. This is particular advantageous if heavy weather is expected due to, for example, arrival of a cyclone. If a cyclonic event is expected, the third platform 28 may be retrieved prior to arrival of the cyclone using the winch system. The third platform 28 may be redeployed after passage of the cyclone.

[00170] Furthermore, in a particular arrangement, the access assembly 1 1 comprises a first support frame 60 having an end 63 pivotaily attached to the fourth platform 50, and another end 86 pivotaily attached to the second section 18 of the second platform 14.

[00171 ] As shown in figure 9, the support frame 60 comprises two arms 65 - each arm 85 having an end 66 pivotaily attached to one side of the second section 18 and another end 63 pivotaily attached to the fourth platform 50. [00172] The access assembly 1 1 also comprises a second support frame 68 having an end 70 pivotaily attached to the third platform 28 and another end 72 pivotaily attached to the first section 16 of the second platform 14. The second support frame 68 comprises two arms 74 arranged in a spaced apart relationship with respect to each other joined together by reinforcing means 76 defined by a plurality of intercrossing beams extending between the arms 74 and along the support frame 68. The second support frame 68 extends parallel to the lower surface of second section 18.

[00173] Each of the arms 74 of the second support frame 68 comprises an end that is pivotaily attached to the first section 16 of the second platform 24 and another end that is pivotaily attached to the third platform 28.

[00174] In the particular arrangement shown in, for example, figure 12, ends of the arms 74 are attached to the first section 16 via a frame 78. The frame 78 is attached to the bottom of the first section 16. The other ends of the arms 74 are attached to the third platform 28 at a location below the joint pivotaily attaching the second platform 14 to the third platform 28.

[00175] In the particular arrangement shown in, for example, figure 4, ends of the arms 74 are also attached to the first section 16 via the frame 78 that is attached to the bottom of the first section 16. However, in this particular arrangement the other ends of the arms 74 are attached to the third platform 28 via another frame 80; this frame 80 is attached to the bottom of the third platform 28 at a location below the joint pivotaily attaching the second platform 14 to the third platform 28.

[00176] As mentioned before, figures 1 to 6 and 14 to 19 depict, respectively, particular arrangements of access systems 10 in accordance with first and second embodiments of the invention. Each of the access systems 10 comprises an access assembly 1 1 .

[00177] In accordance with a first embodiment of the invention of the access system 10, the second platform 12 of the access assembly 1 1 extends substantially parallel to the first platform 12. This particular arrangement allows bow or stern access to the vessel. [00178] As shown in figure 1 , the access system 10 comprises a mooring area 13 adjacent the first platform. The mooring area 13 is defined by four pylons 25 (the first pylons) arranged in a spaced apart relationship with respect to each other.

[00179] Furthermore, the access system 10 in accordance with the first embodiment of the invention comprises a second pylon 27 adjacent one of the pylons 90 supporting the first platform. A gap 92 is defined between the second pylon 27 and the pylon 90. The gap 92 is adapted to receive the second end 22 of the second platform 14.

[00180] As shown in figure 2, the third platform 28 is located between the pylon 90 and the pylon 25.

[00181 ] Moreover, it was mentioned before that the access assembly 1 1 comprises a fourth platform 50 extending perpendicularly from the first platform 12. !n the particular arrangement of the first embodiment of the invention shown in the figures 1 to 6, the end of the fourth platform 28 distal to the first platform 12 is supported on the second pylons 27.

[00182] We refer now to figures 14 to 19. These figures depict two particular arrangements of the second embodiment of the invention.

[00183] In accordance with the second embodiment of the invention, the second platform 14 extends perpendicular to the first platform 12. This embodiment of the invention allows single and double access to the vessei(s) via the Port and Starboard side of the vessel(s).

[00184] Figures 14 to 17 depict the first arrangement of the first embodiment. As mentioned in relation to the first embodiment of the invention, the first section 16 of the second platform 12 comprises a plate 34 that is displaced during the vertical movement of the third platform 28 between the raised condition and the lowered condition. In the first embodiment of the invention, the plate was slideabiy received by a frame section 32 attached to a side of the first platform.

[00185] In the second embodiment of the invention, the first platform is adapted to slideabiy receive the plate 34 of first section 16 of the second platform 14. For this, the first platform 12 comprises a frame section 96 extending perpendicular to the first platform 12 and opposite to the second platform 14, the frame section 98 is adapted to receive a distal end of the plate 34.

[00188] The access system 10 in accordance with a second embodiment of the invention comprises a fourth platform 50 extending perpendicular to the first platform 12. The fourth platform 50 has an end 52 attached to the first platform and an end 54 distal to the first platform 12. In a particular arrangement, a winch system having a winch 56 and a tether 58 is provided for selectively displacing the third platform 28 between the lowered position and raised position.

[00187] The fourth platform 50 is adapted to receive the second platform 12. As shown in figure 16, the fourth platform 50 comprises an indentation 98 for receiving the first end 20 (and the panel 34 attached to the first end 20) of the second platform 12.

[00188] Furthermore, the fourth platform 50 comprises an opening for receiving the plate 34. The opening is connected to the interior to the frame section 96 adapted to receive the plate 34. This arrangement permits selective displacement of the panel 34 into the frame section 96 of the first platform 12. As indicated before, selective displacement of the pane! 34 into and out of the frame section 96 permits that the third platform 28 moves vertically during its displacement between the lowered condition and the raised condition.

[00189] Furthermore, the access system 10 in accordance with the second embodiment of the invention comprise a mooring area 13 defined by four first pylons 25 defining an area for receiving the vessel 24, and two pairs of second pylons 27. The distal end 54 of the fourth platform 50 is supported on the second pylons 27.

[00190] The second pylons 27 are arranged in a spaced apart relationship defining an area surrounded by a front gap 100, a rear gap 102 and a pair of side gaps 104. This particular arrangement allows stern and starboard access of the vessel 24.

[00191 ] The third platform 28 is located in the area defined by the second pylons 27. And, the front gap 100 is adapted to receive the second end 22 of the second platform 12. This arrangement permits the second end to be fastened to the third platform 28 allowing vertical movement of the third platform 28 between the lowered and raised condition when the second platform 12 undergoes pivotal movement. [00192] The third platform 28 provides access to the vessel or vessels 24. For this, the third platform 28 comprises one or more ramps 94. The ramps 94 are adapted to be selectively displaced between a stored condition and a deployed condition.

[00193] As shown in figures 16 and 17, the ramps 94 in the deployed condition traverse the side gaps 104 defined by the second pylons 27.

[00194] Referring now to figures 18 and 19.

[00195] Figures 18 and 19 show an alternative arrangement in accordance to the second embodiment of the invention. This particular arrangement allows bow access to the vessei(s).

[00198] As shown in figures 18 and 19, in this particular arrangement the mooring area 13 defined by the pylons 25 at a location distal to the first platform 12.

[00197] Furthermore, in this particular arrangement the area for receiving the third platform 28 is defined by a pair of first pylons 25 and a pair of second pylons 27 - the pair of second pylons 27 being located with the mooring area 13.

[00198] Referring now to figures 20 and 21.

[00199] Figures 20 and 21 show a particular arrangement of tidal runners 106 to be attached to each of the first and second pylons 25 and 27.

[00200] The tidal runner 106 comprises a body 108 is adapted to be attached to the pylons such as a pylon 25 and a mooring buoy 1 10 adapted to be selectively displaced between an upper position and a lower position along the tidal runner 106.

[00201 ] The body 108 comprises a channel 1 12 for receiving the mooring buoy 1 10. For attachment to the body 108, the mooring buoy 1 10 comprises a base 1 14 for insertion in the channel and adapted to slide along the channel 1 12. The base 1 14 comprises a plurality of wheels for allowing movement of the base 1 14 of the mooring buoy 1 10 within the channel 1 12. The mooring buoy 1 10 comprises a replaceable wear strip 1 16 adapted to receive vessel impact. [00202] In an arrangement, the channel 1 12 comprises an open end 1 18 for receiving the mooring buoy 1 10. The tidal runner 106 comprises a stopper 120 spaced apart from the open end 1 18 of the channel to impede exit of the mooring buoy 1 10 from the channel 1 12,

[00203] Referring now to figures 22 to 27. Figures 22 to 27 show an access system 10 according to a sixth embodiment of the invention. The access system 10 according to the sixth embodiment is similar to the access system 10 according to the first embodiment and similar reference numerals are used to identify similar parts.

[00204] The access system 10 in accordance with the sixth embodiment of the invention comprises an access assembly 1 1 that is attached to the first platform 12.

[00205] The access assembly 1 1 comprises the second platform 14 having thefirst section 16 and the second section 18. The second section 18 is pivotally attached to the first section 16 permitting selective displacement of the section 18 between a retracted condition and a lowered condition.

[00206] Figures 22 to 24 shows a particular arrangement of the access assembly 1 1 in accordance with the sixth embodiment of the invention being displaced between the retracted condition (see figure 22) to the lowered condition (see figure 24) by passing through an intermediate condition- see figure 23.

[00207] Referring now to figure 25. Figure 25 is a front perspective view of a particular arrangement of the access system 10 depicting the access assembly 1 1 in the lowered condition to allow transfer of goods and personnel between the vessel 24 and the first platform 12 of the access system 10.

[00208] The access assembly 1 1 shown in figures 22 to 27 comprises first frame structure 122 (also referred to as the fourth platform) and a second frame structure 124 pivotally attached to each other. In this particular arrangement of the sixth embodiment of the invention, the first frame structure 122 corresponds to the fourth platform 50 described before and depicted for example in figure 6. [00209] An end of the second frame structure 124 is attached to the second section 18 to permit selectively displacement of the second section 18 between the lowered condition shown in the figure 25 and the retracted condition shown in figure 22.

[00210] The particular arrangement of the access assembly 1 1 depicted in figure 25 comprises the first frame structure 122 attached to the same side of the first platform 12 to which the first section 16 is attached. The first frame structure 122 is attached to the first platform at a location spaced apart from the first section 16. In the particular arrangement shown in the figures, the distance between the first section 16 and the first frame structure 122 is substantially equal to the length of the second section 18; in this manner, the second section 18 may be located horizontally between the first section 16 and the first frame structure 122 when the access assembly 1 1 is in the retracted condition as shown in figure 22.

[0021 1 ] Further, the second frame structure 124 comprises a first end 126 pivotally attached to the second section 18; in the particular arrangement shown in figures 22 to 27, the first end 126 is substantially attached at the centre of the second section 18,

[00212] The second frame structure 124 comprises a second end 134 pivotally attached to the first frame structure 122; in the particular arrangement shown in figures 22 to 27, the second end 128 is attached at a lower portion of the first frame structure 122.

[00213] Furthermore, as shown in figures 22 to 27, the second frame structure 124 comprises two triangular frames 130a and 130b. Each triangular frame 130 has a first end for attachment to the second section 18 and a second end for attachment to the first frame structure 122.

[00214] The triangular frames 130a and 130b are spaced part with respect to each other; in this manner, each first end of the triangular frames 130 are attached to a side of the second section 18. The fact that the triangular frames 130a and 130b are spaced apart with respect to each other allows a portion (a portion distal to the first section 16) of the section 18 to be received between the triangular frames 130 when the access assembly 1 1 is moved into the retracted condition as is shown in figure 22. [00215] Further, the first frame structure 122 comprises rectangular frames 132a and 132b spaced apart with respect to each other. Each rectangular frame 130 has a lower end 134 for attachment of the triangular frames 130.

[00218] The rectangular frames 132a and 132b are spaced part with respect to each other; in this manner, the third platform 28 attached to the end 22 of the second platform 18 may be received between the rectangular frames 132 when the access assembly 1 1 is moved into the retracted condition as is shown in figure 22. This permits locating the second section 18 at the same level than the first platform 12.

[00217] Referring now to figures 26 and 27.

[00218] The particular arrangement of the second section 18 depicted in figures 22 to 27 is substantially identical to the second section 18 of the access assembly 1 1 in accordance with the first and second embodiment of the invention that were previously described. However, there is a difference between both second sections 18; the difference is that the second support frame 68 in the second section 18 depicted in figures 22 to 27 is located above the escalator of the second section 18 and not below the escalator of the second section 18 as is the case in accordance with the first and second embodiment of the invention.

[00219] As depicted in figure 27, the second support frame 68 comprises (1 ) a first end pivotaliy attached to the upper end of a frame structure 136 that is attached to the upper surface of the first section 16, and (2) a second end adapted for pivotaliy attaching the platform 28.

[00220] In the particular arrangement shown in figures 22 to 27, the second support frame structure 68 is located above and spaced apart from the second section 18 such that personnel may walk up and down the escalator of the second section 18.

[00221 ] In an alternative arrangement of the sixth embodiment of the invention, the second support frame structure 68 may be configured (and located at a lower height as the second support frame structure 68 shown in figures 22 to 27) to define the handrails on each side of the escalator of the second section 18. [00222] The particular arrangement of access system 10 shown in figures 22 to 27 is particular advantageous because it has several advantages such as (1 ) the height of the platform 28 with respect to the deck of the vessel 24 (when the second section 18 is in the lowered condition and mounted onto vessel 24) has been reduced compared to the previously described embodiments; (2) maintenance of the access assembly 1 1 is facilitated because all pivot joints are accessible to the maintenance personnel; (3) the second support structure 68 may act as handrails; thus, the height of the second section 18 may be reduced which reduces the overall wind affected areas of the access system

10 during severe storms or cyclones; and (4) the second section 18 may be located at the same level than the first platform 12 reducing also the overall wind affected areas of the access system 10 during severe storms or cyclones.

[00223] Furthermore, the access assembly 1 1 may be operated manually or driven electrically or hydraulicaily.

[00224] In the manually operated option, the access assembly 1 1 may be counter- weighted. For example, the second section 18 may be biased so that the second section always either (1 ) returns to the retracted condition being level with the first platform 12 or (2) returns towards the vessel 24 so that the platform 28 may be mounted on the vessel 24 to allow goods and personnel transfer. For example, ballast may be attached at particular locations of the second section 18 via a wire pulley to bias the movement of the second section 18.

[00225] Modifications and variations as would be apparent to a skilled addressee are deemed to be within the scope of the present invention.

[00226] Further, it should be appreciated that the scope of the invention is not limited to the scope of the embodiments disclosed. By way of example, the access assembly

1 1 has been described with reference to access systems 10 that allow transfer of goods and personnel between at least one vessel and a shore of a body of water. However, in accordance with other embodiments of the invention, the access assembly may be used in other applications where access to a water surface of a body of water is required.

[00227] Throughout this specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.