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7966959 |
Permeable hull to mitigate impact load in water
The invention is directed to an apparatus for mitigating the load impact on a surface watercraft and passengers therein, during high speed travel. The hull includes a damping cavity for mitigating...
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7934462 |
Offshore floating structure with motion dampers
A semi-submersible floating platform (10, 10A) for use in offshore applications has a semi-submersible hull structure (11) including support columns (12), a pontoon structure (13) adjoined to the...
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7900572 |
Drag-inducing stabilizer plates with damping apertures
A floating vessel is equipped with perforated plates which exhibit both an added-mass effect and a damping effect. The addition of porosity to an added mass plate phase-shifts the added mass force...
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7900570 |
Roll motion damping device for a floating body
The present disclosure relates to techniques for reducing roll motion experienced by a floating vessel. The disclosure reveals several different techniques for damping roll motion, which may be...
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7865311 |
Method for determining true meridian and device for its implementation
The present technical solution provided allows it to determine true meridian of any movable object. This solution is based on determining true meridian by zero value of linear acceleration induced...
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7832347 |
Floatation apparatus and methods for providing a floatation apparatus
A floatation apparatus attachable to an outrigger extending from a side of a boat such as a shell for rowing includes a buoyant member, and at least one releasably attachable member operably...
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7743720 |
Multihull hydrofoil watercraft
A multihull hydrofoil watercraft incorporates a stabilization system wherein the buoyancy of the hulls is used as a sensing and control mechanism for the hydrofoils. The use of hull buoyancy to...
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7677838 |
Motion reduction apparatus and floating body therewith
A motion reduction apparatus has an orthorhombic shaped floating main body (11), a plumb plate supported vertically on one side section of the floating main body by stay members (13), and flow...
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7565876 |
Marine vessel control system
A marine vessel control system includes a primary marine propulsory mechanism attached to the vessel and an intelligent vessel control system. Also included is an attitude sensor linked with the...
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7527009 |
Method for damping of the rolling motion of a water vehicle, in particular for roll stabilization of ships
A method for damping of the rolling motion of a water vehicle, in particular roll stabilization of a ship with at least one propeller, comprising a rotating wheel body, which bears axis parallel...
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7516712 |
Vertical damper for mooring vessels
A vertical damping system for a plurality of water vessels for diminishing the relative vertical movement between two or more water vessels moored in a skin-to-skin orientation. The vertical...
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7458329 |
Hydrogyro ship stabilizer and method for stabilizing a vessel
An apparatus for stabilizing a vessel is provided. The apparatus, or “hydrogyroscope,” includes a liquid container disposed along the hull of a floating vessel. The liquid container provides a rot...
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7370594 |
System for reducing the roll of a boat
Two fuel tanks are situated on opposite sides of the central longitudinal axis of a boat. An inclinometer generates electric signals indicating the inclination of the boat about its longitudinal...
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7316193 |
Vessel for water travel
A vessel for water travel that has the stability of a heavy weighted vessel when at rest in the water and the performance of a lightweight vessel when in a planed condition. The vessel comprises at...
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7263942 |
Fin stabilizer for vessel and control method and control program therefor
An object is to suppress the rocking motion of a vessel body with a high level of accuracy by obtaining a required lifting force. A torque calculation section 27 calculates a torque of a fin 11...
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7240630 |
Gyrostabilizer for small boats
A gyrostabilizer system that counteracts the natural rolling motion of a small boat or vessel. The invention constitutes an improvement in prior art systems of this type in that the system weighs...
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7011472 |
Semi-submersible offshore vessel
A semi-submersible offshore vessel including a rectangular ring-pontoon having a first transverse pontoon section at a first end of the vessel and a parallel second transverse pontoon section at a...
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6978728 |
Active roll stabilization system for ships
The invention relates to an active roll stabilisation system for ships, comprising at least one rotatable stabilisation element extending below the water line, sensor means for sensing the ship's...
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6745715 |
Stern flap corrective motion and fuel saving control system for marine vessels
Corrective stabilizing motions are applied to a sea vessel hull during seawater travel in response to stern flap displacement by hydrodynamic forces induced at the buttock of the vessel hull and by...
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6655308 |
Passive stabilizer for floating petroleum-production systems
The present invention relates to a passive stabilizer (3) which is installed in the lower part of a tanker used in floating production systems which make use of a mechanism which enables the tanker...
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6652193 |
Swaying reduction apparatus and floating body therewith
The motion reducing apparatus has an orthorhombic shaped floating main body, a horizontal plumb plate supported horizontally on one side section of the floating main body by stay members, and flow...
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6619221 |
Oscillation suppression device
An oscillation suppression device comprises a base body to be secured to a ship body, a gimbals secured to the base body, a damper, a flywheel provided in the gimbals, and a motor for rotating the...
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6571724 |
Stern depressor type motion stabilization system for marine vessel
Depressors mounted on the stern of a marine vessel are deployed by displacement from positions retracted from the seawater to positions immersed therein so as to divert exit flow of the seawater...
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6487982 |
Anti-rolling structure for box-type floating body
A floating body 1, which is substantially rectangular when seen from above, is provided with at least a protrusion 3 on at least either of sides in a transverse direction 5 of the floating body 1...
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6382121 |
Boat ballast system
A ballast system for a sailing boat includes an elongate body having a first end and a second end. A mounting is provided at the first end of the elongate body for suspending the elongate body from...
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6367400 |
Stabilization apparatus for ship movement
A stabilization apparatus for ship movements has adjustable stabilizers, drive devices by means of which the position of the stabilizers can be adjusted, a control device by means of which control...
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6240869 |
Watercraft stabilization apparatus
Stabilization apparatus (12) for a watercraft (10) having a hull (14), including at least one hydrofoil (20) with a leading edge (22) and a trailing edge (24), the edges defining a chord (26)...
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6102625 |
Wave dampener for floating structures
A dampening device for dampening the vertical wave-induced motion component of a floating structure. The dampener projects in the form of a skirt down below the bottom of the floating structure...
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6019056 |
Anti-rolling apparatus
An anti-rolling apparatus according to the present invention includes rail members which are formed in straight form and disposed perpendicular to a rolling axis of an object whose rolling is to be...
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5839693 |
Aircraft refueling system
A refuelling system for aircraft, and in particular to a cellular system for refuelling long range aircraft crossing oceans. A floating refuelling station for aircraft includes at least one...
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5803006 |
Float master for a watercraft
A float master (12) for a watercraft (14) comprising a telescopic arm (16). A structure (18) is for securing a first end (20) of the telescopic arm (16) to a deck (22) of the watercraft (14). An...
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5787832 |
Method and apparatus to stabilize marine vessels
A stabilizer system is used to stabilize a marine vessel hull. The system includes at least one stabilizer assembly attached to the hull and the stabilizer assembly is capable of moving with...
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5732646 |
Container with recirculation system for cleaning boat hulls on land
A boat hull cleaning system, particularly for sail and motor yachts, prevents the contamination of sewers and open waters by recirculating the cleaning water within the system without discharging...
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5713163 |
Vibration damping apparatus
A vibration damping apparatus includes a frame having a rail member and end plates at longitudinal ends of the rail member. The frame is a hollow box-shaped element or a hollow tubular element. The...
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5632222 |
Load orientating device
A device (10) for orientating a load to be suspended and moved by a crane includes a flywheel (11) mounted for rotation in a housing (14). A turntable (17) is pivotally connected to the housing...
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5628267 |
Oscillation suppression device and ship provided with the same
An oscillation suppression device is provided for attenuating oscillation of an object to be controlled by a gyro torque of a control moment gyro having a flywheel rotating at a high speed. The...
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5592897 |
Watercraft
A watercraft has a buoyancy hull with an upwardly bode rail forming an arcuate guide for a passenger stand which allows the passenger to remain substantially upright as the buoyancy hull rolls...
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5588391 |
Fin with trailing edge fixed flaps for ships
A fin with trailing edge fixed flaps for ships, characterized in that it is made of a main fin (1) to which are associated one or several pairs of fixed flaps (2a and 2b) of mean camber.
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5488919 |
Canted rudder system for pitch roll and steering control
The invention is directed to a system for stabilizing a marine vehicle against rolling and pitching motions and for providing steering control to the marine vehicle. The system includes at least...
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5452674 |
Ship stabiliser automatic gain control system
An improved fin stabilizer control system which has an automatic gain control (AGC) system which uses the difference between the control laws demand signals and the actual fin angles to calculate a...
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5379713 |
Stabilizer
A stabilizer for a ship includes a track shifting mechanism, pulleys fixed on the track shifting mechanism, pulleys fixed on the ship and a continuous running body such as belt or chain running in...
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5203727 |
Control apparatus for an outboard marine engine with improved cruising performance
A control apparatus for an outboard marine engine is able to improve cruising performance of a boat particularly during acceleration or travelling on a curved course. An attitude angle sensor...
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5144904 |
Stabilizing apparatus
Stabilizing apparatus for stabilizing boats comprising a weighted concave body which is suspended from the boat and which is formed as a grid defining openings through the body and a flexible flap...
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5108326 |
Flexible surface drogue/stabilizer for drifter buoys
The invention relates generally to the stabilization of drifter buoys and the like and more particularly to surface or near surface Lagrangian Drifter Buoys launched from aircraft or surface...
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5095839 |
Stabilizer for boats and the like
An apparatus for stabilizing a vessel to drastically reduce the rolling and/or pitching of floating vessels, platforms, or the like. At least one stabilizer is suspended by a bridle secured from a...
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5026008 |
Fluid-loop reaction system
An improved fluid actuating system for imparting motion to a body such as a spacecraft is disclosed. The fluid actuating system consists of a fluid mass that may be controllably accelerated through...
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4905622 |
Marine anti-roll device
A system for reducing roll of vessels comprises at least one and preferably a pair of hydrofoil devices suspended from lines rigged on each side of the vessel, preferably from outrigger booms. The...
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4863404 |
Jet propulsion and stabilization means for ships
A jet propulsion system is provided for ships. Port and starboard ductways are provided with radial constrictor axial-flow impellers, and the output flow therefrom is divided between hull-bottom...
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4798157 |
Drogue associated with a guidance system
The drogue (1) has a steering system (8) which may be assisted by a rudder (4). The drogue is steered by varying the towing angle by applying a longitudinal differential force to the rope (6). The...
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4785754 |
Device for avoiding capsizing of catamarans
A device for avoiding capsizing of catamarans, in which a mast of the catamaran is pivotally mounted on a transverse beam of connection between two hulls and kept in position by two shrouds which,...
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