Abstract: A submersible habitat 100 for the repair of subsea cable 11, the habitat comprising a cable maintenance environment 108 being suitable for receiving a portion of the subsea cable under repair 115 while the subsea cable 11 is submerged. The submersible habitat further comprising raising and/or lowering component 25 configured for raising and/or lowering the submersible habitat 100 relative to the subsea cable 11. The entire repair is carried out within the submersible habitat 100 without the requirement to transport any portion of the subsea cable 11 to the surface.

Abstract: A hinge system (1, 1a) for use with a lightweight, portable gangway (100), the hinge system (1a) comprising at least three plates (2a,2b,2c), a bar (4) and a washer (6), wherein a first pair of the plates (2a,2b) are attached at either side of a lower surface (106) of a first section (102a) of the gangway (100) and the other plate (2c) is attached at approximately the centre of a second section (102b) of the gangway (100), so that when the sections (102a,102b) are brought towards each other, the first pair of the plates (2a,2b) are aligned with the other plate (2c).

Abstract: A Kinetic Infinity Mount System (KIMS) comprises an outer housing, first and second outer gears, first and second inner gears, two pins, two screws, two mechanical collars, and a fin box. The KIMS allows different reusable and removable fins to be mounted onto a surfboard or other waterborne vessels. The KIMS provides dynamic, simultaneous adjustment and setting of a toe angle and a camber angle of the fin. The fin box includes two screw holes at each end and four screw holes along the side. Users choose from multiple settings of positive or negative toe angle or camber angle for each fin mounted into the surfboard. Camber and toe angles, in both positive or negative directions, can be adjusted simultaneously or separately to the user's preference. The KIMS allows different types of fins by FCS®, Futures® or similar, rectangular based fins to be mounted into the fin box and adjusted to desired configuration.

Abstract: A drive source switching system for a marine propulsion device includes a first drive source, a second drive source, a propeller shaft, a first driving member, a second driving member, a first driven member, and a second driven member that are movable in an axial direction of the propeller shaft, and a controller. The first driven member transmits a drive force generated by the first drive source to the propeller shaft when engaged with the first driving member. The second driven member transmits a drive force generated by the second drive source to the propeller shaft when engaged with the second driving member. When the controller moves the first driven member that is not engaged with the first driving member toward the first driving member, the controller moves the first driven member back when the first driven member fails to be engaged with the first driving member.

Abstract: A spreader bar for a wind sport harness, with a front member having at least one release latch on one end. A structural side member is releasably securable to the release latch. A bracket for receiving the side member is configured to releasably secure the side member. The length of the side member extending through the bracket is adjustable. Closing the at least one release latch can create a unitary mechanical connection around a user.

Abstract: A planing boat including: a hull having a boarding area; a screw unit having a screw, and configured to be rotatable with respect to the hull so that the expulsion direction of a water current by the screw can vary by 360 degrees; and a direction change mechanism having a turning drive force source, and configured to change the expulsion direction by rotating the screw unit with respect to the hull with a drive force of the turning drive force source.

Abstract: A field configurable autonomous vehicle includes modular elements and attachable components. The vehicle can be assembled from these modular elements and components to meet desired mission and performance characteristics without the need to purchase specially designed vehicles for each mission. The vehicle can include a mechanisms that magnetically attaches to a ferry vehicle for transport to the location of use.

Abstract: A wheel kit for use with a boat lift includes an upper member attachable to the boat lift, and a lower member slidably disposable within the upper member. The lower member contains an axle and a wheel assembly. A braking member includes a base plate with a first side and an opposing second side, a wedge portion outwardly extending from an upper end of the first side, and a tab outwardly extending from a lower end of the first side of the base plate. The braking member slidably disposes upon the axle via an aperture contained within the base plate. When positioning the lower member into the upper member to retract the wheel assembly, the wedge portion of the braking member contacts a closed terminal end of a slot contain within the upper member, outwardly urging the braking member against the wheel assembly to prevent rotation of the wheel assembly.

Abstract: A steering system for a marine craft includes a steering input shaft. The steering system also includes an electric power steering (EPS) system operatively coupled to the steering input shaft, the EPS system having an electric motor that drives rotation of a system output shaft. The steering system further includes a hydraulic pump operatively coupled to the system output shaft with a gear set, the hydraulic pump having a longitudinal direction that is perpendicular to a steering input shaft axis. The steering system yet further includes a fluid reservoir located remotely relative to the hydraulic pump.

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. In the preferred embodiment, 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.

Abstract: A field configurable autonomous vehicle includes modular elements and attachable components. The vehicle can be assembled from these modular elements and components to meet desired mission and performance characteristics without the need to purchase specially designed vehicles for each mission. The main body of the vehicle is a spherical body.

Abstract: A watercraft storage structure for storing a watercraft comprises a plurality of supports, wherein each support includes a clamping bracket; a shelf slidably attached to the plurality of supports by the clamping bracket attached to each plurality of supports forming a watercraft storage area; and a support platform positioned within the watercraft storage area, wherein the support platform is adapted for supporting a watercraft; wherein the each clamping bracket includes a first plate and a second plate that operate to press against the support forming a frictional fit with the support.

Abstract: A handheld underwater aircraft includes a battery compartment (12) and propellers. There are at least two propellers, which are symmetrically distributed on both sides of the battery compartment (12), and are connected to the battery compartment (12). A special design with axes of the propellers being unparallel with an axis of the battery compartment (12) is adopted, and unparallel included angles make component forces generated by the various propellers in a direction of motion of a non-underwater aircraft offset each other, and enable the underwater aircraft to maintain balanced and forward-forward motion. The design with the axes of the propellers being unparallel with the axis of the battery compartment (12) leads to a little power loss, but avoids a larger power loss caused by the impact of water on the human body, thereby comprehensively improving the thrust of the underwater aircraft in use.

Abstract: An integrated Kiteboarding canopy self-launching and landing safety system is presented. The system includes a base. The system also includes an attachment mechanism configured to attach to the base, wherein the attachment mechanism is structured to capture a kiteboarding canopy. The system additionally includes a release mechanism positionable on the base, wherein the release mechanism is arranged to be able to release a kiteboarding canopy upon actuation. Further, the system includes a securing mechanism configured to connect with the base, wherein the securing mechanism is configured to secure a kiteboarding canopy upon landing. And, the system also includes a manual and automatic device to control both landing and launching evolutions.

Abstract: A covering and a method of forming a covering for a hatch door or lid, e.g., the hatch door of a marine vehicle, such a boat or the like, is provided. The covering includes a central portion having a configuration corresponding to a configuration of the hatch door and a thickness. A flange projects from the central portion and has a thickness less than the thickness of the central portion. The flange movable between a first position wherein the flange lies in a first plane generally parallel to a first surface of the central portion and a second position wherein the flange is generally perpendicular to the first plane and defines a cavity in the covering for receiving the hatch door therein.

Abstract: Devices and methods for recovering an unmanned underwater vehicle. The device includes a gantry mounted on a recovery vehicle, a frame, and a shaft extending between the gantry and the frame and configured to vertically move the frame relative to the gantry. Attached to the frame are a plurality of rotatable arms movable between an opened position and a closed position. A first end of each arm is attached to the frame at a pivot. A flexible strap extends between each of the second ends of the arm and the frame. As the arms are moved to the closed position around the unmanned underwater vehicle, the straps will support the unmanned underwater vehicle.

Abstract: According to an example aspect of the present invention, there is provided a marine propulsion system (1) comprising a first portion (4) and a second portion (5) of a set of movable foils, a movement mechanism (2) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to simultaneously control a motion of the first portion (4) and the second portion (5) of the set of foils along a closed first trajectory (6) comprising a first direction (17) and a second direction (18) which is different than the first direction (17), and a pitch mechanism (3) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to control a pitch angle (?) of the first portion (4) and the second portion (5) of the set of movable foils, and wherein the pitch angle (?) of at least a part of the second portion (5) of the set of foils is dependent on an incoming fluid flow (vx), the motion of the second portion (5) of the set of foils, and a flow (v

Abstract: A traction system, notably for a ship, includes a fixed station, at least one first sail and one second sail, the first sail comprising a wing and being connected to a winch of the fixed station by a first hauling cable, the second sail includes a second wing and being connected to a winch of the fixed station by a second hauling cable. The fixed station includes a mast which is equipped with a first conveyor dedicated to mooring the first wing to this mast and with a second conveyor dedicated to mooring the second wing to this mast.

Abstract: A method for controlling an elastic mount configured to support a propulsion device with respect to a marine vessel, wherein the elastic mount contains an electromagnetic fluid and an electromagnet and is configured such that adjusting an amount of electricity applied to the electromagnet changes the shear strength of the electromagnetic fluid and thereby controls elasticity of the elastic mount, including applying a first amount of electricity to the electromagnet to produce a first elasticity in the elastic mount, determining that a vessel speed indicator exceeds a high speed threshold, determining that a trim position for the propulsion device is greater than a threshold trim position, detecting at least a threshold decrease in throttle demand, and applying a second amount of electricity to the electromagnet wherein the second amount of electricity is greater than the first amount of electricity, so as to decrease the elasticity of the elastic mount.

Abstract: SCUBA diving equipment is composed of a heavy SCUBA pressure vessel, buoyancy compensation device and a heavy weight system. Together with a constricting exposure suit the current setup makes for a rather cumbersome system. Perfect buoyancy is a term used in SCUBA diving to describe the ability of the diver to maintain its vertical position in the water column. Doing so requires a thorough understanding of the governing physics principles as well as considerable practice time. Together, the cumbersome nature of standard SCUBA systems and the physical and mental requirements of operating said systems underwater are a commercial hurdle, preventing many individuals from entering the sport. The present invention provides systems that can significantly simplify both elements by allowing water to occupy some of the pressure vessel internal volume.