A water area object detection system includes an imager to capture an image around a hull, and a controller configured or programmed to perform a control to detect a feature point corresponding to an object in the image together with a distance to the feature point based on the image captured by the imager to create a water area map in which an object presence range including a likelihood that the object is present is set around the feature point. The controller is configured or programmed to reduce the object presence range as the distance from the imager to the feature point decreases, and set a size of the object presence range to a lower limit when the distance from the imager to the feature point is equal to or less than a predetermined distance.

A method and system for controlling a marine vessel is configured to operate a lanyard system to detect at least one fob worn by an individual present on the marine vessel and determine that a missing fob of the at least one fob is no longer detected, wherein the missing fob is either an operator fob or a passenger fob. A man overboard event is generated based on the missing fob, wherein the man overboard event is an operator overboard event if the missing fob includes the operator fob or a passenger overboard event if the missing fob is the passenger fob. One or more search assistance functions are automatically activated based on the man overboard event, wherein the search assistance functions activated depend on whether the man overboard event is the operator overboard event or the passenger overboard event.

A method and system for controlling a marine vessel is configured to operate a lanyard system to detect at least one fob worn by an individual present on the marine vessel and determine that a missing fob of the at least one fob is no longer detected, wherein the missing fob is either an operator fob or a passenger fob. A man overboard event is generated based on the missing fob, wherein the man overboard event is an operator overboard event if the missing fob includes the operator fob or a passenger overboard event if the missing fob is the passenger fob. One or more search assistance functions are automatically activated based on the man overboard event, wherein the search assistance functions activated depend on whether the man overboard event is the operator overboard event or the passenger overboard event.

A variable buoyancy device has an inner region and an outer cavity. The outer cavity extends at least partially around the inner region and is adapted to contain fluids, such as a liquid and a gas, the relative proportions of which can be varied to vary buoyancy. The inner region provides an advantageous location for equipment, while the outer cavity provides a significant volume for achieving a wide range of buoyancy adjustments.

A variable buoyancy device has an inner region and an outer cavity. The outer cavity extends at least partially around the inner region and is adapted to contain fluids, such as a liquid and a gas, the relative proportions of which can be varied to vary buoyancy. The inner region provides an advantageous location for equipment, while the outer cavity provides a significant volume for achieving a wide range of buoyancy adjustments.

According to one aspect, a master control module controlling multiple valve assemblies on a marine vessel may include a receiver, an input component, a processor, and a transmitter. The receiver may receive positional status signals from corresponding individual control modules. Each positional status signal may be indicative of a positional status of a valve assembly corresponding to a respective individual control module. The input component may receive a command pertaining to one or more of the valve assemblies, including a desired flow characteristic and/or a desired time. The processor may generate control signals for the valve assemblies in accordance with the desired flow characteristics. The transmitter may transmit the control signals to the respective individual control modules to effectuate the desired flow characteristic accordingly.

According to one aspect, a master control module controlling multiple valve assemblies on a marine vessel may include a receiver, an input component, a processor, and a transmitter. The receiver may receive positional status signals from corresponding individual control modules. Each positional status signal may be indicative of a positional status of a valve assembly corresponding to a respective individual control module. The input component may receive a command pertaining to one or more of the valve assemblies, including a desired flow characteristic and/or a desired time. The processor may generate control signals for the valve assemblies in accordance with the desired flow characteristics. The transmitter may transmit the control signals to the respective individual control modules to effectuate the desired flow characteristic accordingly.

A navigation information device is provided with a position acquisition unit for acquiring a position information of its own ship, a memory for storing display settings corresponding to a waypoint that is a via point on a planned route, and a display processing unit for performing generation processing for generating a screen in which the position information is superimposed on a chart, and performing change processing for changing display settings to display settings corresponding to the waypoint based on a positional relationship between the position information and the waypoint.

A marine propulsion control system for use with a marine vessel includes an engine in electronic communication an engine controller, and a transmission having a gearbox and an oil pressure sensor in electronic communication with the engine controller and configured to measure a transmission oil pressure. The gearbox includes a feedback sensor configured to transmit a gear state. A propulsion device is rotatably connected to the gearbox, and a shaft fixedly attached to the propulsion device and rotatably coupled to the gearbox. The shaft includes a shaft rotation sensor configured to measure a rotational direction of the shaft. A propulsion control processor is in electronic communication with the engine controller, the shaft rotation sensor and the gearbox, and is configured to determine a current gear of the marine vessel based on the rotational direction of the shaft and one or more of the gear state and the transmission oil pressure.

A marine propulsion control system for use with a marine vessel includes an engine in electronic communication an engine controller, and a transmission having a gearbox and an oil pressure sensor in electronic communication with the engine controller and configured to measure a transmission oil pressure. The gearbox includes a feedback sensor configured to transmit a gear state. A propulsion device is rotatably connected to the gearbox, and a shaft fixedly attached to the propulsion device and rotatably coupled to the gearbox. The shaft includes a shaft rotation sensor configured to measure a rotational direction of the shaft. A propulsion control processor is in electronic communication with the engine controller, the shaft rotation sensor and the gearbox, and is configured to determine a current gear of the marine vessel based on the rotational direction of the shaft and one or more of the gear state and the transmission oil pressure.