A position locating system to determine relative position information between a marine vessel and a trailer includes a first GNSS receiver located on one of a marine vessel and a trailer to receive a positioning signal from a positioning satellite, a second GNSS receiver located on the other of the marine vessel and the trailer to receive the positioning signal from the positioning satellite, a registering unit to register a current position of the trailer based on the positioning signal received by the first GNSS receiver when the trailer is stationary, a direction obtaining unit to obtain a direction of the marine vessel, a generating unit to generate correction information in real time based on the current position and the positioning signal received from the positioning satellite by the first GNSS receiver, and a position locator to determine relative position information between the marine vessel and the trailer.

A propulsion rudder for use with a water vessel, preferably an unmanned surface water vessel. The propulsion rudder includes a rotating base, a rudder assembly, and a thrust assembly. In one embodiment, the rudder assembly may comprise two vertical mast rudders connected by an upper horizontal wing, with the thrust assembly mounted on the horizontal wing. In a second embodiment, the rudder assembly may comprise an annular airfoil with the thrust assembly mounted on a mast and positioned in the center of the annular airfoil. The thrust assembly may be a propeller, a turbine, a ramjet, or a rocket.

[Problem] To provide a collision damage reduction system for watercrafts, which system is usable even when a user watercraft stops or is moving at slow speed.

[Solution] A collision damage reduction system for watercrafts comprises: an information acquiring device for acquiring information on a user watercraft 2 and a target watercraft 11; a turning device for turning the user watercraft 2 to change a front-rear direction thereof; and a control device configured to acquire the information from the information acquiring device, and control the turning device based on the acquired information. When detecting a risk of collision between the user watercraft 2 and the target watercraft 11, the control device controls the turning device such that the turning device turns the user watercraft 2 to a state in which the front-rear direction thereof is parallel to a moving direction of the target watercraft 11.

A method of automatically moving, by an automatic location placement system, a marine vessel includes receiving, by a central processing unit, from a vision ranging photography system, at least one optical feed including data providing a mapping of an environment surrounding a marine vessel. The method includes displaying, by the central processing unit, on a touch screen monitor, the mapping of the environment. The method includes receiving, by the central processing unit, from the touch screen monitor, target location data. The method includes directing, by the central processing unit, at least one element of a propulsion system of the marine vessel, to move the marine vessel to the targeted location, using the mapping.

Methods and systems described herein can assist a user when loading a watercraft onto a trailer (e.g., at a boat ramp). For example, position data generated by sensor(s) coupled to the watercraft and/or trailer can cause one or more propulsion devices associated with the watercraft to automatically (e.g., without user intervention) position the watercraft onto the trailer, for example, by controlling the power and/or thrust direction of the propulsion device(s).

A method of automatically moving, by an automatic location placement system, a marine vessel includes receiving, by a central processing unit, from a vision ranging photography system, at least one optical feed including data providing a mapping of an environment surrounding a marine vessel. The method includes displaying, by the central processing unit, on a touch screen monitor, the mapping of the environment. The method includes receiving, by the central processing unit, from the touch screen monitor, target location data. The method includes directing, by the central processing unit, at least one element of a propulsion system of the marine vessel, to move the marine vessel to the targeted location, using the mapping.

Various aspects provide for a propulsion system (200) for a ship (100) comprising at least first and second thrusters (205, 206) and first and second directors (220, 720), wherein a computing platform (300) is coupled to the thrusters and directors being configured to receive desired longitudinal and lateral headings (750, 760) and determine a configuration of the propulsion system that is expected to propel the ship in the desired longitudinal and lateral headings.

A hybrid ship propulsion machine includes an internal-combustion-drive propulsion part and an electric propulsion part. The electric propulsion part is attached to a first housing part of the internal-combustion-drive propulsion part, and is disposed at a position higher than an anti-cavitation plate of the internal-combustion-drive propulsion part such that a second propeller of the electric propulsion part sinks below a water surface during low-speed movement, which is not a planing state of a ship, and the second propeller comes out of the water surface during planing of the ship.

A track management device for a movable body includes processing circuitry configured to detect a position of the movable body and determine geographic information of a region surrounding the movable body for displaying on a display, and a memory configured to store track information of the movable body, the track information including a path traversed by the movable body towards a predetermined position, and assign a priority tag to the track information associated with a current path of the movable body, when the movable body is located within a predetermined distance from a predetermined position. The processing circuitry is further configured to generate display information for displaying the track information corresponding to the geographic information on the display.

A traveling route generating device is provided, which may include a user interface and processing circuitry. The user interface may receive a home route that is a route on which a ship travels upon departing from a home harbor or upon returning to the home harbor, the home harbor being a location from which the ship departs. The processing circuitry may generate a traveling route between one of a destination of the ship and a current location of the ship, and a location on the home route.