Abstract: A power train for an amphibian operable in land and marine modes includes a prime mover having an integral speed change transmission, at least a first land propulsion unit, at least a first marine propulsion unit, and a power transmission unit including a drive member configured to couple the prime mover to the at least first marine propulsion unit, wherein the prime mover is arranged to drive the at least first land propulsion unit through/via the integral speed change transmission in the land mode, and the prime mover is arranged to drive the at least first marine propulsion unit through/via the power transmission unit in both the marine mode and the land mode.

Abstract: An electrically-propelled marine vehicle and method of making same, including providing a hull of the marine vehicle and mounting a submersible electric thruster to the hull. The thruster includes a stator assembly and a rotor assembly. The rotor assembly forms an internal cavity with a plurality of magnets arranged radially outwardly of the internal cavity. The stator assembly includes electrical windings that are disposed within the internal cavity of the rotor assembly. The thruster is configured to allow the internal cavity to be flooded with water when the thruster is submerged, and the electrical windings are covered by a protective barrier that prevents the flooded water from contacting the windings. The thruster of the marine vehicle is thus water cooled, and the electromotive forces provided by the windings generate sufficient thrust to propel the marine vehicle through the water.

Abstract: A novel watercraft propulsion device is disclosed that includes multiple propulsive elements improving power and efficiency over prior designs. A self-adjusting variable pitch propeller is combined with a water jet and an exhaust driven turbine to provide optimal thrust and efficiency across the range of engine power, load and watercraft speed. Propulsive elements are axially disposed around a central drive shaft and exhaust port with the combined water jet/exhaust turbine disposed closest to drive shaft and the variable pitch propeller attached to the exterior of the water jet housing. A rotating duct is fixed to the propeller blades and rotates with the blades to reduce cavitation. Combined apparatus provides increased performance and efficiency over all watercraft speeds/load as well as additional safety due to the ducted propeller. Propulsor with an inducer, conical impeller and a diffuser also shown.

Abstract: In order to meet the objectives described above, the present invention provides a robot for detecting breakdown of NORM (Naturally Occurring Radioactive Materials) in a production system, in order to plan operations to remove scale containing radioactive material, and for decommissioning subsea system operations. The fields of application are the area of flow assurance and reservoir management, using operations to chemically remove scale containing NORM in the production system, and to improve the safety of the decommissioning processes of production systems. The invention allows the position of the scale inside the production system to be safely detected, such as, for example, the beginning of the deposit inside a production line, the extension of the deposit, and the end of the deposit, as well as whether the deposit occurred at different points along the production line.

Abstract: A robotic fish includes a pair of rear lateral gears controlling a rear portion of the robotic fish, and a pair of front lateral gears control a front portion of the robotic fish. A pair of right side lateral gears control a right pectoral side of the robotic fish, and a pair of left side lateral gears control a left pectoral side of the robotic fish.

Abstract: A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

Abstract: A watercraft comprising a battery ballast system is shown and described. The battery ballast system comprises a plurality of carriage assemblies, each comprising a plurality of tiers along the watercraft's height axis, and each being movable along the watercraft's length axis. The batteries sit on movable supports that are movable along the watercraft's width axis. Each tier is loaded to less than 50 percent with batteries and battery supports so that the batteries in each tier can be moved along the ship's width axis relative to the hull in a manner that will affect the ship's list. The carriage assemblies occupy a portion of the length along which they are movable so that they can be moved along the ship's length axis relative to the hull to affect the ship's trim.

Abstract: A field configurable vehicle includes bladders located interior of the vehicle hull walls. One or more of the bladders can be filled with fluids of varying densities to manage the buoyancy, mass properties, and thermal heat dissipation of the vehicle.

Abstract: A stowable propulsion system for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsion device is configured to propel the marine vessel in water. A shaft extends along a length axis and pivotably couples the propulsion device to the base. The propulsion device is pivotable into and between a stowed position and a deployed position, wherein pivoting the propulsion device causes the shaft to rotate about the length axis.

Abstract: A collapsible protective case for transporting or storing one or more surfboards, the protective case having a rigid, impact-resistant outer surface, a housing and a plurality of adjoining nested sections that are selectively configurable between a collapsed, fully nested position within the housing and an extended position, the protective case including a space configured to accommodate, in the extended position, the surfboard fins.

Abstract: A deployable conscious or unconscious person-in-the-water rescue apparatus that can be manually or automatically deployed multiple and consecutive times to assist both a rescuer and a person-in-the-water by providing a tethered net that self-deploys in the water and supports the person-in-the-water while being pulled to safety.

Abstract: An example system for attaching accessories to a boat or a marine environment includes a first leg frame member, a second leg frame member, an attachment device, a first flexible support member, and a second flexible support member. Each of the first leg frame member and the second leg frame member has a base member, an intermediate member, and a top member. The intermediate member is attachable to the base member and the top member is attachable to the intermediate member. The attachment device is mountable to the first leg frame member and the second leg frame member. The first flexible support member is attachable to one of the first leg frame member and the attachment device. The second flexible support member is attachable to one of the second leg frame member and the attachment device.

Abstract: A convertible inflatable stand-up paddle board includes a main body member defining a first aperture and optionally a second aperture, and one or more panels fixed to the main body member and covering a bottom end of the apertures. A foldable seat assembly is disposed in the first aperture, and a second seat assembly is disposed in the second aperture. The seat assemblies have a seat portion and a backrest portion. The backrest portion is movable between (i) a folded position wherein a surface of the backrest portion and an upper surface of the main body member define a standing surface for the stand-up paddle board, and (ii) an upright position wherein the backrest portion extends away from the seat portion. The stand-up paddle board is thereby convertible between a stand-up configuration and a sit-down configuration.

Abstract: The invention relates to a buoy comprising a buoyant, plastic core component, and a plurality of detachable flotation components that support and surround the core component. The buoy is preferably more than 2.5 meters diameter, but the diameter of the core component is preferably less than or equal to 2.35 meters diameter. This facilitates transport in a single shipping container. A novel tie bar assembly and novel lifting/mooring mounts are also disclosed.

Abstract: A device for supporting a propulsor on a marine vessel. The device includes a base that is fixable to the marine vessel and a pivot arm for coupling the propulsor to the base. An actuator is configured to pivot the pivot arm relative to the base into and between a retracted position and a deployed position. A fastener is engageable to couple the actuator to the pivot arm, where when the fastener is engaged the pivot arm is prevented from pivoting other than by the actuator, and where applying a predetermined force on the pivot arm disengages the fastener to allow the pivot arm to pivot other than by the actuator.

Abstract: A tool interchange for a submersible remote operated vehicle (ROV) arm includes a first interchange body that affixes to an ROV arm. A second interchange body is carried by the first interchange body to rotate on a rotation axis. The second interchange body includes a tool mount actuable between gripping an ROV tool to the second interchange body and releasing the ROV tool from the second interchange body. An inductive power coupling part is provided in the tool mount. The inductive power coupling part is presented outwardly in the tool mount opposite the first interchange body, resides on the rotation axis and is fixed with respect to the first interchange body while the second interchange body rotates. The inductive power coupling part is adapted to inductively communicate power with a corresponding inductor power coupling part of the ROV tool when the ROV tool is docked in the tool mount.

Abstract: A self-inflating water rescue device (1) consisting of a belt (2) for fastening to the waist and a lifebelt (5) connected to a compressed gas cartridge (4) attached to an opening trigger (3), the belt (2) and the lifebelt (5) being connected to each other by a safety strap (9), one end of a release cord (11) is connected to the opening trigger (3), the other end of the cord (11) being routed outside the lifesaving device (1), the lifebelt (5) being provided with a release valve (12) where applicable, and characterized by that a storage pocket (8) is formed on at least a part of the outer side of the belt (2) by a fixed wall (6) and an sliding (loose) wall (7), the lifebelt (5) being arranged in the storage pocket (case) (8), the outer part of the belt (2) being itself a fixed wall (6) of the pocket (8), the lifebelt (5) has a basically interrupted perimeter circle shape, the ends (13) of which at the interruption are overlapping when filled with gas, and when not filled with gas the lifebelt (5) is folded int

Abstract: A cleat for mooring a watercraft at a thrown end of a line has a base surmounted by a body, the base being fastenable to a watercraft deck, the line having a rope and stopper formed by a transverse protuberance, the cleat having an engagement part adjoining the base and a funnel-shaped through-opening to an elongate slot in the body, the slot having a height allowing the longitudinal progression and transverse passage of the rope from the opening towards the interior of the body, the slot leading into a chamber having a minimum dimension greater than the minimum slot height, the maximum dimension of the chamber being less than the dimension of the protuberance forming the stopper so the stopper of a line passing transversely through the body can be blocked against a the body side face both with the rope in the slot and in the chamber.

Abstract: A marine engine assembly has a housing; an internal combustion engine having a crankshaft; and a driveshaft assembly driven by the crankshaft. The driveshaft assembly has: a first driveshaft having a first end operatively connected to the crankshaft; a second driveshaft having a first end connected to a second end of the first driveshaft, the first end of the second driveshaft being rotationally fixed relative to the second end of the first driveshaft, the first and second driveshafts being concentric, one of the first and second driveshafts being disposed at least in part inside another one of the first and second driveshafts, the second driveshaft extending from its first end toward the first end of the first driveshaft; and a third driveshaft having a first operatively connected to the second driveshaft. The marine engine assembly also has a propulsion device operatively connected to a second end of the third driveshaft.

Abstract: A stowable propulsion device for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsor is configured to propel the marine vessel in water. An arm pivotably couples the propulsor to the base such that the propulsor is movable into and between a stowed position and a deployed position, where the propulsor is closer to the base in the stowed position than in the deployed position. A first actuator pivots the arm so as to move the propulsor into and between the stowed position and the deployed position. A second actuator is manually actuatable to pivot the arm so as to move the propulsor towards the stowed position.