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JP2007210549A |
To provide an outboard motor capable of improving a degree of freedom in selecting a propeller by making a cavitation plate movable. This outboard motor comprises a drive source driving a propeller 54, a frame pipe 44 housing a vertical ...
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JP3962678B2 |
To prevent damage and vibration of a pod type propeller device including a support shaft, caused by generation of cavitation. In a vessel having the pod type propeller device 1 placed in a lower part of a stern of a vessel body, the pod ...
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JP3134464U |
To provide a composite fin device for a ship capable of improving its propulsion efficiency as compared with a ship equipped with a conventional ladder fin or a rectifying fin. A ladder fin 5 is provided behind a propeller 2. A V-shaped ...
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JP3958051B2 |
To provide a boat and its operating method which can simplify a support mechanism and a turning mechanism of a POD propeller installed separately from a main propeller and reduce costs. This boat is provided with the main propeller 2 whi...
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JP3957103B2 |
To stably prevent noises for a long period of time, from being generated between a thrust receiver at the load reception part of the body of a propelling machine and a trim rod of a trim cylinder. Rotatably in the vertical direction, the...
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JP3944462B2 |
To obtain a rudder with a fin which facilitates attachment of the fin and never reduces the propulsion efficiency, additionally, to obtain the low-cost rudder with the fin by reducing the torque moment applied to a rudder mounting part o...
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JP3939757B2 |
PCT No. PCT/NL96/00473 Sec. 371 Date Sep. 8, 1998 Sec. 102(e) Date Sep. 8, 1998 PCT Filed Dec. 2, 1996 PCT Pub. No. WO97/20730 PCT Pub. Date Jun. 12, 1997There is described a tugboat (1) having three azimuthal propelling units (10, 20, 3...
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JP3937013B2 |
To provide a ship with a course stabilizing device capable of separately controlling rotary motion of a fin and swinging of a pod propeller as the pod propeller while a stern is provided with a fin serving as a course stabilizing device ...
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JP3916404B2 |
To provide a propeller capable of suppressing the generation of a hub vortex. In this propeller for generating a fluid flow or thrust, the change ratio [(HR-H0.5T)/H0.5T] of a pitch of the pitch HR in the sing span length of R (wing root...
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JP3913262B1 |
To reduce the amount of oil leakage when supplying high-pressure oil from the end of a propeller shaft to a servo cylinder on the other end of the propeller shaft in a rotary shaft refueling device such as a thruster, and to efficiently ...
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JP3913261B1 |
To reduce an amount of oil leakage when supplying high-pressure oil from a propeller shaft end to a servo cylinder on the other end of a propeller shaft in a thruster refueling device so that refueling can be performed efficiently. An oi...
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JP3886049B2 |
To provide a valve capable of further improving the propulsion efficiency. A rudder 9 is mounted behind a propeller 3 mounted on a stern part of a hull 1 through a rudder shaft 11. The propeller 3 is mounted to be rotated and driven arou...
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JP3878588B2 |
To provide an unsymmetrical stern frame lower fin structure not requiring any specific adjustment but improving a self-cruising element at a lower part of a propeller by a simple structure. An unsymmetrical stern frame lower fin structur...
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JP2006347285A |
To further save power required for propulsion.At a stern portion 27 of a vessel, a stern fin 31 for damming and straightening a downward flow generated along a hull outside wall 28 is provided. Under the existence of the stern fin 31, an...
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JP3863989B2 |
To establish an ice braking method and provide an ice ship having a comparatively narrow hull, with which cruising of a ship having a relatively large width through an ice field is well supported. An ice breaker 10 is equipped with prope...
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JP2006306304A |
To provide a nozzle propeller for improving thrust in bollard condition and propulsive efficiency in sailing.A propulsion device is provided with a screw propeller, and a nozzle arranged around the screw propeller and having a wing shape...
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JP3842189B2 |
To solve the problem wherein swirling flows flowing out of each blade of a propeller concentrate in a rear end of a pod to form a strong spiral swirling flow in the rear of the pod and a large energy loss is generated. The pod 3 is insta...
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JP2006298043A |
To provide a vessel capable of sailing even in light-water draft, and sailing on forward, backward, lateral movement, right turning round, left turning round, and turning round on its spot.In the vessel, a freely rotatable propeller can ...
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JP2006524599A |
A wake adapted propeller drive mechanism delays or reduces cavitation or stall in a propeller drive mechanism mounted for rotation at the stern of a hull so as to be rotatable in a wake produced by forward motion of the hull through the ...
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JP2006522711A |
The invention relates to a method and an apparatus to control a propulsion drive. The propulsion drive comprises at least one first propeller drive, which rotates the first propeller and by which the propulsion power and/or rotating spee...
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JP3808726B2 |
To provide a ship fin device achieving simple construction improving the propelling efficiency and reducing the resistance of a hull for saving energy. Both ship sides 11, 12 under a stern water line 2 of a ship 15 is equipped with two s...
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JP2006516511A |
A large ship having a hull about 100 meters or more in length, so that the ship is suited for transoceanic traffic, with a narrow wedge-like bow and the broadest part of the underwater hull being located amidships, includes at least one ...
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JP3793963B2 |
To provide a vehicle capable of freely traveling on a sand such as a tidal flat, a reclaimed land, etc., and a super-soft muddy ground, having sufficient thrust, capable of improving the soil by aerating the soil, and having the propulsi...
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JP2006168605A |
To provide a device for reducing the underwater radiated noise of a propeller which is unnecessary for any installation work of complicated air supply pipes, and a propulsion device or a ship having the same.The device for reducing the u...
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JP3787330B2 |
A steer-drive for vehicles primarily operated in fluids (e.g., boats and planes) interposes respective left and right orbital gear drives into the vehicle drivetrain between the engine/transmission or/speed-reducer and the vehicle's resp...
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JP2006137336A |
To provide a hull vibration reduction method enabling adjustment of phase difference during navigation according to various conditions and capable of reducing hull vibration caused by propeller excitation force.In the hull vibration redu...
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JP3780342B2 |
To properly provide a course keeping function by utilizing a slight difference in the number of rotations between a front propeller and a rear propeller while basically suppressing the occurrence of swirl flow to the rear by a contra-rot...
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JP3767726B2 |
To enable a submarine boat to navigate underwater at high speed and to plane when floated. In this submarine boat, a water jet propulsion machine 4 comprising a pump casing 1 for pressurizing by means of an impeller 10 water sucked from ...
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JP3743233B2 |
To provide a flywheel structure of an outboard motor lowering the center of gravity of an engine and enhancing the startup property of the engine. In the outboard motor, a sensing member 33 which is fitted to a flywheel 23 provided at th...
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JP3726137B2 |
To provide a ship steering device for enabling a ship to go offshore and come alongside a pier, capable of safely and easily steering the ship for enabling the ship to go offshore and come alongside the pier while checking the longitudin...
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JP3725525B2 |
To provide a pod column structure for a pod propulsion machine with reduced propeller surface force. The pod column structure 1 for the pod propulsion machine is composed of the propulsion machine 5 with built-in driving motor and two co...
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JP3721401B2 |
To provide a ship with a propelling performance improver causing no hindrance to the inflow to a propeller by smoothly introducing a flow of water along a ship's bottom under surface at navigating time even if an inclination of a stern p...
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JP2005319881A |
To provide a steering arm for an outboard motor with a low-speed control switch having excellent operability and visibility without twisting of a lead wire in steering a vessel.The steering arm 1 has a rod-shaped arm body 11 which is con...
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JP3716458B2 |
To lubricate effectively without providing a special device by forming a center oil hole with the tip opened on the bevel gear side and with the tail end closed, in the axial center part of an inner propeller shaft, and forming radial oi...
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JP2005313822A |
To provide an operation device for an outboard motor reducing the number of parts of an operation system for inputting driving instruction of respective actuators and a mounting space to a hull in an outboard motor provided with the actu...
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JP3713542B2 |
To provide a course stabilizing device for a ship equipped with an appendage at the rear end of the skeg in stern to facilitate the generation of an eddy from the rear end of the skeg during navigation, thereby improving the course stabi...
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JP3712780B2 |
To design the shaft strength at a minimum cost by suppressing the over torque generated by the lateral unbalance of transmission torque. A clutch slip detecting circuit 22a and a torque detecting circuit 22b are integrated into a main en...
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JP2005289295A |
To provide a bridge structure capable of reducing the number of crews in a steering room from two to one.It is not required to provide a big chimney on a hull and possible to secure a rear view field of a bridge as the pod propulsion shi...
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JP2005289300A |
To provide a steering device for an outboard motor capable of preventing interference even if it is a steering device using a hydraulic cylinder, and is fitted regardless of a type of a bracket section and tilted to the full, and moreove...
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JP2005254849A |
To provide an electric steering gear of a small ship capable of offering a good maneuvering performance at all times according to the ship speed by changing the ratio of the steering amount as the rudder turning angle relative to the rot...
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JP2005239083A |
To provide a pod type propulsion unit and a vessel provided with this capable of eliminating cavitation generated on a strut of the pod type propulsion unit.The pod type propulsion unit 10 is provided with the strut 11 having a cross sec...
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JP3692398B2 |
To provide a ship with reduced hull resistance that can link friction resistance reduction effect by microbubbles to reduction in actual propulsion energy of ship without degrading propulsion performance of propellers. A pod propeller 11...
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JP3690817B2 |
PURPOSE: To raise the effectiveness of an investment on an icebreaking ship, which carries out its icebreaking operation only in a relatively short period and is usually deficient in open water cruising, which is required to use the ship...
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JP2005524576A |
The invention relates to a propeller shaft arrangement for a seagoing displacement vessel (1) with a hull (2) and a propulsion system comprising at least one engine (3), at least two propeller shafts (4) and at least two propellers (5). ...
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JP2005178721A |
To provide a propulsive device of a vessel capable of simplifying and reducing the weight of a rudder installing structure by arranging so that a propeller shaft is inclined up toward the back and thereby approaching the propeller rear s...
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JP3668884B2 |
To provide a marine vessel constituted to make effective use of both rotational energy of bilge vortex and rotational energy of propeller back wash. This energy-saving marine vessel has a vessel form having the bilge vortex center 2a bel...
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JP2005517589A |
The flow channel between the skegs (2) is wedge-shaped, widening continuously in the downward- and sternward directions, preferably with slight curvature. Sidewalls of the flow channel are least partially plane surfaces, running out into...
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JP3659920B2 |
To provide a damping device mounting structure for a ship capable of sufficiently suppressing vibration at a stage of a ship bottom plate adjacent to a propeller which is an exciting source in regard to vibration excited by rotation of t...
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JP2005145352A |
To provide a baffle fin device and a vessel equipped with it having no influence upon the propelling performance and capable of reducing the varying pressure generated by a propeller and reducing the influence of the varying pressure upo...
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JP2005515937A |
The holding device comprises an annular element (5) placed round the motor shaft (1) and with at least one releasable attaching device. The ring is U-shaped in cross section, with the aperture facing the center of the element. There is a...
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