Systems and methods are for monitoring underwater impacts to marine propulsion devices. The systems can comprise a marine propulsion device that is trimmable up and down about a trim axis; a trim sensor that senses at least one of a current trim position of the marine propulsion device relative to the trim axis and a rate at which the marine propulsion device is trimmed relative to the trim axis; and a controller that is configured to compare the rate at which the marine propulsion device is trimmed relative to the trim axis to a stored threshold value to thereby determine whether an underwater impact to the marine propulsion device has occurred.

To provide a motion control device for a ship, which does not require adjustment of weights of an performance function, and is less liable to fail in control calculation by building optimization calculation only into a part of classical feedback control, the motion control device, which is configured to cause a ship, on which a plurality of outboard engines are installed, to cruise along a desired trajectory, includes: a trajectory generator configured to output a trajectory command; a controller configured to output a control force command based on the trajectory command and a sensor information group output from a sensor group provided for the ship; and a control force distributor configured to carry out, based on the control force command, optimization calculation for operation amounts required for the plurality of outboard engines in accordance with a constraint condition set in advance so as to output the operation amounts.

An electromechanical lockout device for a remote control on a marine vessel includes an electric actuator and a locking pin having an engagement end and a second end. The locking pin is arranged with respect to a control lever such that the locking pin is positionable in a locked position, where the engagement end of the locking pin prevents rotation of the control lever into a reverse position, and in a retracted position, where the engagement end of the locking pin allows rotation of the control lever into the reverse position. A method of controlling lockout for a remote control includes sensing a position of a control lever, calculating a rate of change of the position, and engaging a lockout to prevent a gear system from shifting into reverse gear if the rate of change exceeds a threshold rate of change.

An electromechanical lockout device for a remote control on a marine vessel includes an electric actuator and a locking pin having an engagement end and a second end. The locking pin is arranged with respect to a control lever such that the locking pin is positionable in a locked position, where the engagement end of the locking pin prevents rotation of the control lever into a reverse position, and in a retracted position, where the engagement end of the locking pin allows rotation of the control lever into the reverse position. A method of controlling lockout for a remote control includes sensing a position of a control lever, calculating a rate of change of the position, and engaging a lockout to prevent a gear system from shifting into reverse gear if the rate of change exceeds a threshold rate of change.

The application relates to systems and techniques for remotely navigating a marine vessel. The systems can include a dynamic positioning system and/or a marine location management system for remotely navigating a marine vessel. The marine location management system can include a communication module for receiving a geographic location of the marine vessel and transmitting a navigation plan to a vessel control system. The marine location management system can also include a processor adapted to determine the geographical coordinates of the marine location and the marine vessel. In some cases, the marine vessel can include a thruster system adapted to receive the navigation plan and determine a set of thrust vectors based on the navigation plan.

A modular configuration of a workboat including a main deck. The workboat includes an engine operators station including one or more variable frequency drives and one or more switchboards to manage propulsion of the workboat. The workboat also includes one or more battery sets, wherein each of the one or more battery sets includes a plurality of batteries contained in a battery set container, wherein at least one of the one or more battery sets is coupled to one or more systems of the workboat that require energy. The battery set containers may be moved using a rail structure of the workboat below the main deck. The one or more battery set containers may be moved back and forth below the main deck for transfer in and out of the workboat.

A modular configuration of a workboat including a main deck. The workboat includes an engine operators station including one or more variable frequency drives and one or more switchboards to manage propulsion of the workboat. The workboat also includes one or more battery sets, wherein each of the one or more battery sets includes a plurality of batteries contained in a battery set container, wherein at least one of the one or more battery sets is coupled to one or more systems of the workboat that require energy. The battery set containers may be moved using a rail structure of the workboat below the main deck. The one or more battery set containers may be moved back and forth below the main deck for transfer in and out of the workboat.

The present invention relates to a submerged-floating type water house. The house comprises: a first lower side part and a second lower side part formed symmetrically with respect to each other; a first upper side part and a second upper side part formed symmetrically and extending from the first lower side part and the second lower side part; and a front part and a rear part formed in front of and in back of the first lower side part and second lower side part and the first upper side part and second upper side part, thereby forming a rhombic-shaped body and floating in water.

The present invention relates to a submerged-floating type water house. The house comprises: a first lower side part and a second lower side part formed symmetrically with respect to each other; a first upper side part and a second upper side part formed symmetrically and extending from the first lower side part and the second lower side part; and a front part and a rear part formed in front of and in back of the first lower side part and second lower side part and the first upper side part and second upper side part, thereby forming a rhombic-shaped body and floating in water.

A sailing assisting system is provided in which a sailing assist for a vessel which enters a specific water area where sailing of the vessel is limited is realized through a simple configuration and in which a steersman is prevented from having strange feeling. A sailing assisting system includes movable controlling devices (a shift and throttle controller, a steering device, a trim switch), actuators (a rotational shaft drive unit, a shaft drive unit, a switch drive unit) for driving these controlling devices, and a control unit for executing a notification operation and controlling the actuators to limit movable ranges of the controlling devices if a hull is determined to stay within a specific water area where the sailing of the hull is limited based on information on the specific water area and information on the position of the hull.