Abstract: An improved tiller restraining device is provided for attachment to the underside of a boat's tiller to selectively control the position of the tiller and rudder. The device features a specialized mechanical clutch that grips or releases a control rope, which runs through the clutch and is secured across the cockpit. The device is operated with one hand by moving an integrated clutch lever upward to release the rope and allow free tiller movement, or downward to engage the rope and restrict tiller movement. Inside the device, a spring acts on the lever to pinch and bind the rope against the openings where the rope passes through the clutch housing. The spring and lever are aligned so they toggle, enabling the clutch to remain either engaged or disengaged with no additional controls.

Abstract: A disconnectable turret mooring system for a vessel is provided, comprising a turret positioned in a moonpool of the vessel and having an upper part cooperating with a first upper bearing assembly positioned between the turret and the vessel, and a lower disconnectable buoy part cooperating with a second lower bearing assembly positioned between the turret and the vessel, wherein the lower bearing assembly comprises a number of discrete circumferentially spaced bearing members which are attached to and extend radially inwards from the vessel for engaging the lower disconnectable buoy part of the turret, and which bearing members are displaceable radially between an inner operative position for engaging the lower disconnectable buoy part and an outer inoperative position for disengaging the lower disconnectable buoy part.

Abstract: A steerable wing-type sail system for a wind powered craft. The system includes first and second secondary airfoils and that are spaced outwardly to the sides of the plane of the main sail, and that are positioned rearwardly of the trailing edge of the sail. The secondary airfoils are selectively pivotable so as to steer the main sail in one direction or the other. The main sail is also provided with a pivoting flap at its trailing edge, which pivots simultaneously with and in the same direction as the secondary airfoils. The secondary airfoils are carried on elongate horizontal booms mounted near the mid-span height of the main sail. The secondary airfoils pivot about vertical axes at the distal ends of the booms, and are operated by control cables that are retracted and paid out by linear actuators or similar mechanisms. The craft may be multi-hull vessel, such as a catamaran.

Abstract: A mooring chain connector assembly for a floating device), such as for example a FPSO vessel or a floating offshore structure, is described, the connector assembly comprising a chain connector having a first pivot axis and a coupler for coupling a mooring chain to the chain connector. The assembly further comprises a channel assembly attached to the floating device. The channel assembly have an upper end and a lower end, wherein mooring chain locking device is provided at the upper end of the channel assembly. The channel assembly extends in the floating device from its bottom side to a higher level in the floating device which can be located above sea surface. A bearing location for the first pivot axis of the chain connector is provided at the lower end of the channel assembly.

Abstract: A buoyancy control system comprises a housing and first and second pistons movably supported by the housing. In a shallow mode, displacement of the first piston alters a buoyancy of the buoyancy control system. In a deep mode, displacement of the first and second pistons alters the buoyancy of the buoyancy control system.

Abstract: An inflatable life raft having one or more air channels forming a generally rectangular shaped body when the raft is unfolded and inflated. Valves in fluid communication with the air channels for inflating and deflating the life raft. The inflatable raft includes a waterproof pouch releasably attached to the raft for storing items such as a rope, flare launcher, strobe light, glow sticks, and whistle. An ankle tether couples the life raft to a user, and a plurality of reflectors are attached to the surface of the inflatable life raft. For added convenience, a storage means is integrally constructed with the life raft for storing the folded normally deflated life raft so that the raft can be easily carried and transported. A replaceable gas cylinder, and manual hand pump are operatively coupled to the valves for automatically or manually inflating the life raft.

Abstract: This invention relates to the use of a removably attachable sailing rig with an integrated water foil for the conversion of a conventional boat, row boat, kayak, canoe, and power boat into a sailboat or an existing sailboat rig into a canting sail rig. The sail rig system utilizes the strong attachment points inherently available on most conventional boats and soft inflatable boats for attachment. The sail rig is comprised of a mast with an integrated water foil and is supported by a strut on each side forming a tripod with the mast, a sail is attached to the mast which is unconventionally tacked or jibed around the front of the mast in order to clear the struts. The base of each strut has a strut attachment assembly for direct attachment to an oar lock or shear of a boat. The base of the mast has a mast attachment assembly for direct attachment to the bow or bow towing ring. The mast and water foil can be tilted or canted to either side of the boat by lengthening or shortening each strut.

Abstract: A marine propulsion system includes a transmission mechanism arranged to transmit a driving force generated by an engine to propellers with a speed thereof changed to a low speed reduction ratio and a high speed reduction ratio; a control lever section operated by a user in controlling drive of the engine; and a control portion and an ECU controlling a shift between reduction ratios of the transmission mechanism based on operation of the control lever section by the user. The control portion and the ECU control a shift between reduction ratios of the transmission mechanism based on a transmission control map providing a reference for a shift between reduction ratios of the transmission mechanism taking into consideration an engine speed of the engine and a lever opening of the control lever section. This arrangement provides a marine propulsion system in which both acceleration performance and maximum speed can approach levels that a user desires.

Abstract: An outboard motor includes an engine and an exhaust pipe. The engine has a crank case, a cylinder body, and a cylinder head aligned along the front-rear direction of the outboard motor, and arranged to support a crankshaft so as to extend along an up-down direction. The exhaust pipe is arranged to lead an exhaust gas of the engine to a main exhaust passage positioned below the engine. The cylinder head has an exhaust gas outlet opened in the side portion on one side of the cylinder head in the left-right direction of the outboard motor. The exhaust pipe has a bypass exhaust pipe which, in a plan view, extends from the exhaust gas outlet, bypasses the engine along the crank case, and reaches the other side in the left-right direction of the engine.

Abstract: A geostationary anchoring and riser arrangement in a vessel comprises a rotating body (11), which is mounted in a vertical shaft (6) in the vessel (1) by axial and radial annular bearings (31, 32). Above the upper axial and radial bearing (31, 32) is mounted a dynamic primary seal (35), thereby establishing a dry space above the bearings, in the shaft (6). Under the bearing is mounted a secondary seal (41). A fluid manifold (28) is placed in the dry shaft space.

Abstract: A boat body for a boat includes a projecting portion arranged to support one or more outboard motors at a position spaced upward and rearward from a transom. The projecting portion extends from a rear portion of the transom of the boat body, and the projecting portion supports the outboard motors at locations upward and further rearward than in a case where the outboard motors are directly installed on the transom. The projecting portion includes a projecting member that is bilaterally symmetrical and that decreases in width in a rearward direction and in an upward direction. The projecting portion includes a side thruster passing through the projecting portion in a horizontal direction. When viewed from the side, a lower edge portion of the projecting portion includes a slanting portion that is generally linear and that extends rearward and upward from a lower portion of the transom. When viewed from the rear, the lower edge portion of the projecting portion has a generally V-shape.

Abstract: A rowing oar handle comprising a first portion and a second portion, in which the first portion and the second portion are axially rotatable to one another, and in which in use the point of rotation is located between a user's hands.

Abstract: A swingable spacing dock is configured to berth a ship spaced from the shoreline and includes a support positioned on shore, a swingable dock arm pivotally mounted on the support, and a powered drive. The dock arm is driven by the powered drive to swing between a ship docking position where the dock arm extends outwardly beyond the shoreline to engage the berthed ship and a storage position where the dock arm is positioned substantially entirely over the shore.

Abstract: A system and method for configuring and supporting mooring lines deployed on offshore structures, e.g. Spar-type platform, are provided with recessed portions that are located around the splash/ice zones for “cutting” through waves. An offshore structure may be provided with a chain tensioning mechanism that applies a desired tension to a hull chain and mooring line during mooring. Upon mooring the offshore structure, a chain lock mechanism maintains the tension in the hull chain and mooring line, while the chain tensioning mechanism releases a portion of the hull chain which is to be stored in a chain housing which is fully submerged underwater. This way, the recessed portions of the offshore structure around the splash/ice zones would be substantially free of the hull chains. Additionally, a disconnect mechanism may be provided to allow quick and safe disconnection of the offshore structure from the mooring position.

Abstract: A steering device includes a main body that attaches to a tow rope, inline between a towing vessel and a personal watercraft. The main body, which is positioned just forward of the personal watercraft, accommodates an extendable rudder that moves between a normally retracted position within the main body, and a lowered, operable position to exert a steering force on the main body and the personal watercraft. An elongate tiller extends between the rudder and a handle that is optimally positioned for grasping by the rider of the personal watercraft. In accordance with several embodiments, movement of the rudder from the relaxed, retracted position to the lowered, operable position is achieved by exerting a particular directional force on the handle (e.g., pulling, pushing forward, or lifting). Moving the handle to the left or the right achieves the desired steering action. Upon release of the handle by the rider, the rudder returns to the normally retracted position, thereby removing the steering influence.

Abstract: An assembly (10) is provided for mounting a hydrofoil, trolling plate or trolling motor (or other accessory) on the anti-ventilation plate (14) of a sterndrive or outboard motor (16) without the need to modify the plate or motor. The assembly (10) has lower and upper elements (20, 22) which are secured about the plate (14) by bolts (34). The upper element (22) has a bolt pattern (40) to mount the hydrofoil or other device. Grip devices (50) can be mounted on the lower element (20) that are adjusted to grip the edges of the plate (14). A catch (60) mounted on the lower element (20) can be engaged in the trim tab or anode recess.

Abstract: A watercraft having a deck is configured with a first rocker having graspable input arm above-deck and a lower output arm, the first rocker being pivoted to the craft, the output arm connecting a push-bar at a first end and the push-bar having a second end connecting a second rocker, the second rocker having input and output arms, the output arm of the second rocker having a propelling fin, the second rocker being pivoted to the watercraft. The watercraft may have a third rocker, fin, and pivot, and more. Users stand upon deck, grasp the first rocker's input arm and vertically thrust the rocker to propel. The invention further comprises a device for human powered propulsion remove-ably attachable to watercrafts, especially small boats, and surfboards, and for propelling them from a standing position by human power.

Abstract: A catalyzed exhaust system for an outboard motor engine rotates its catalyst device in a catalyst housing above an adapter plate which supports the engine and separates it from the driveshaft housing. The exhaust gas is directed initially in an upwardly direction and then is turned downwardly to provide space for location and easy access to the catalyst device. A coolant, such as water drawn from a body of water, is reversed in direction of flow several times in order to advantageously fill certain cooling channels in an upward direction. In addition, various coolant channels are vented to remove potential pockets of air in their upper regions.

Abstract: An automatically and remotely operable retractable mooring cleat. The retractable cleat is mountable in a surface, such as the deck, of a marine vessel. A source of motive energy forms part of an actuation mechanism energisable by a user to extend or retract cleat members from the surface. The cleat members each travel along diverging paths as they extend and travel along the same respective paths as they are retracted. The cleat is thereby able to extricate itself from an attached mooring line as it retracts. Multiple retractable cleats may be positioned about a marine vessel, each of which is operable remotely to extend or retract. Single-handed launching of a moored vessel is therefore possible.

Abstract: A method for intercepting and yawing an errant sailing vessel is disclosed, wherein the vessel might have been hijacked or malfunctioned and in danger of colliding with an object. The method comprises dispatching a watercraft to approach the sailing vessel and secures itself to one side of the sailing vessel's hull. Preferably, a second watercraft is secured to the other side of the vessel's hull. At least one of the watercrafts is then operated to direct propulsion thrust to yaw the vessel in a desired direction. Preferably still, the first and second watercrafts are each secured respectively to the right and left sides of the vessel's hull proximate to the stem or bow end. The first (right side) watercraft then operates a fluid propulsion which thrust is directed away from the vessel's right side while the second (left side) watercraft's propulsion is on standby. As a result, the vessel is turned rightward or clockwise.