A wearable water shoe apparatus for walking, standing and jet siding on water, includes in each of a first water shoe and a second water shoe (i) a sleeve to receive a leg of a user and (ii) a bottom section, The sleeve has a platform for standing thereon. Each pair of a plurality of pairs of jet motors is configured to eject a jet stream of water. A stabilization unit, including a tilt sensor and a plurality of gyroscopes, is configured to detect a stabilization state of at least one of the first water shoe and second water shoe. A processing unit is configured to receive output from the stabilization unit, determine a direction of movement indicated by the user and direct at least one of the pairs of motors to eject a water stream out of at least one of the water shoes based on the indicated direction.

A wearable water shoe apparatus for walking, standing and jet siding on water, includes in each of a first water shoe and a second water shoe (i) a sleeve to receive a leg of a user and (ii) a bottom section, The sleeve has a platform for standing thereon. Each pair of a plurality of pairs of jet motors is configured to eject a jet stream of water. A stabilization unit, including a tilt sensor and a plurality of gyroscopes, is configured to detect a stabilization state of at least one of the first water shoe and second water shoe. A processing unit is configured to receive output from the stabilization unit, determine a direction of movement indicated by the user and direct at least one of the pairs of motors to eject a water stream out of at least one of the water shoes based on the indicated direction.

A steering apparatus for a marine vessel includes a central portion supported rotatably around a rotation fulcrum with respect to a hull, a wheel portion, a spoke portion that connects the central portion and the wheel portion, first switches, second switches near the first switches, and paddles operable to cause a thrust to be applied in a front-rear direction to the hull. The first and second switches control the hull in different modes. The first switches are located at positions where a marine vessel operator is able to operate the first switches with the fingers of hands operating the paddles. The first and second switches are on the spoke portion and have different heights in a pressing direction.

The invention relates to a watercraft comprising an at least partly elastic and preferably inflatable casing (1), in particular a casing which surrounds an inner region. The watercraft has a base (2), an energy storage device (6), and a drive device which is secured to the base and comprises a drive unit (4) that is located in the water during operation, the flow of water produced by the drive unit during operation being controllable by means of a controller. The drive device is releasably secured to the base as a module comprising the energy storage device (6), which is designed as part of the module, such that the module can be removed as a structural unit.

The invention relates to a watercraft comprising an at least partly elastic and preferably inflatable casing (1), in particular a casing which surrounds an inner region. The watercraft has a base (2), an energy storage device (6), and a drive device which is secured to the base and comprises a drive unit (4) that is located in the water during operation, the flow of water produced by the drive unit during operation being controllable by means of a controller. The drive device is releasably secured to the base as a module comprising the energy storage device (6), which is designed as part of the module, such that the module can be removed as a structural unit.

A method of controlling propulsion of a marine vessel includes limiting user input authority over propulsion output by at least one propulsion device based on proximity measurements so as to maintain the marine vessel at least a buffer distance from any object, where in the buffer distance is a predefined distance around the marine vessel. After a user-generated instruction is received to suspend maintenance of the buffer distance and a user control input is received to move the marine vessel in the direction of the object, the at least one propulsion device is controlled based on the user control input such that the marine vessel approaches and impacts the object.

A method of controlling propulsion of a marine vessel includes limiting user input authority over propulsion output by at least one propulsion device based on proximity measurements so as to maintain the marine vessel at least a buffer distance from any object, where in the buffer distance is a predefined distance around the marine vessel. After a user-generated instruction is received to suspend maintenance of the buffer distance and a user control input is received to move the marine vessel in the direction of the object, the at least one propulsion device is controlled based on the user control input such that the marine vessel approaches and impacts the object.

A monolithic attitude control motor frame includes a monolithic structure including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending from the outer surface of revolution. Adjacent cavities of the plurality of cavities share a side wall or side wall portion therebetween. Each of the cavities is configured to receive an attitude control motor. A monolithic attitude control motor system includes a monolithic frame including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. The system further includes a plurality of attitude control motors corresponding to the plurality of cavities, such that an attitude control motor of the plurality of attitude motors is disposed in each cavity of the plurality of cavities.

A monolithic attitude control motor frame includes a monolithic structure including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending from the outer surface of revolution. Adjacent cavities of the plurality of cavities share a side wall or side wall portion therebetween. Each of the cavities is configured to receive an attitude control motor. A monolithic attitude control motor system includes a monolithic frame including an outer surface of revolution and a plurality of side walls defining a plurality of cavities extending radially from the outer surface of revolution. The system further includes a plurality of attitude control motors corresponding to the plurality of cavities, such that an attitude control motor of the plurality of attitude motors is disposed in each cavity of the plurality of cavities.

A boat comprises a hull, a primary steering mechanism carried by the hull, a control station located on the hull, a helm located at the control station, and a thruster system carried by the hull. The primary steering mechanism, such as a rudder, is operable via the helm with a helm input being derived from operation of the primary steering mechanism thereby. The thruster system includes at least one thruster mounted to the hull, distinct from the primary steering mechanism, and a controller. The controller receives the helm input and is configured with program instructions to operate the at least one thruster responsive to the helm input to supplement a corresponding movement of the hull. The controller can also automatically operate the thruster responsive to direction, speed and ballast inputs.