A multi-anchor depth control system for a boat or other watercraft having a line for securing anchors to the boat, at least two anchors attached at or near opposing ends of the line, a depth finder, and a controller configured to automatically adjust the amount of line released from the boat to maintain the anchors on the floor of the body of water in which the boat is floating, based upon information obtained from the depth finder.

A personal watercraft includes a watercraft body having a watercraft bottom, a propulsion device, and a sonar. The propulsion device includes an engine supported by the watercraft body and a jet pump arranged rearward the engine and driven by the engine. The sonar is arranged at the watercraft bottom forward relative to the engine, and capable of transmitting and receiving sound waves.

A sonar device including a tow cable and a towed body elongate along a longitudinal axis from a first longitudinal end to a second longitudinal end. The towed body includes a plurality of electroacoustic transducers aligned along the longitudinal axis and is connected to the tow cable, so it is able, when it is towed and fully submerged, to be oriented along a vertical axis. At least one towed body is connected to the tow cable by a first hanger and a second hanger. First ends of the first and second hangers are connected to the tow cable and a second end of the first hanger is attached to the towed body at a first fixing point near the first longitudinal end and a second end of the second hanger is attached to the towed body at a second fixing point near the second longitudinal end.

A watch device includes a processor, a display and a memory. The memory includes instructions for establishing a network connection between the watch device and an electronic GPS mapping computer of a watercraft for transmitting, receiving or displaying data.

A trolling system for a boat includes a trolling motor and a control mechanism. The control mechanism includes an interface for establishing a network connection between the control mechanism and an electronic GPS mapping computer. The control mechanism is configured to receive control instruction from the electronic GPS mapping computer to cause the trolling motor to execute a direction in accordance with a water depth.

Watercraft automation and aquatic data utilization for aquatic efforts are utilized for updating map data with current position and current sonar information of a sonar device.

Provided is a system for protecting submerged components of a watercraft from collision with a submerged object or a floor of a body of water. The system includes a depth sensor configured to measure a water depth beneath the watercraft, an actuated mechanism configured to adjust a depth of at least one of the submerged components, and a controller in communication with the depth sensor and the actuated mechanism. The controller is operable to receive the measured water depth and control the actuated mechanism to adjust the depth of the at least one submerged component as a function of the measured water depth to prevent the at least one submerged component from colliding with the submerged object or floor of the body of water.

A jettison device isolates an object, particularly a potentially hazardous object on a ship, platform or similar object. The jettison device includes a housing with an opening configured to face towards an outside region, and a container configured to hold one or more of the objects. The jettison device further includes a container lock and a container jettison. A ship, platform or other vessel includes at least one of the jettison devices above and at least one jettison device arranged in or near a hull surface with the opening facing a region outside the hull surface.

Watercraft automation and aquatic data utilization for aquatic efforts are disclosed. In one aspect, an anchor point is obtained and a watercraft position maintenance routine is actuated to control the watercraft to maintain association with the anchor point. In another aspect, prior aquatic effort data is obtained in association with an anchor point. In yet another aspect, current aquatic effort data is generated in association with an anchor point, in still another aspect, current aquatic effort data and prior aquatic effort data are utilized for prediction generation. In yet another aspect, current aquatic effort data and prior aquatic effort data are utilized to obtain another anchor point for a watercraft.

Watercraft automation and aquatic data utilization for aquatic efforts are disclosed. In one aspect, an anchor point is obtained and a watercraft position maintenance routine is actuated to control the watercraft to maintain association with the anchor point. In another aspect, prior aquatic effort data is obtained in association with an anchor point. In yet another aspect, current aquatic effort data is generated in association with an anchor point. In still another aspect, current aquatic effort data and prior aquatic effort data are utilized for prediction generation. In yet another aspect, current aquatic effort data and prior aquatic effort data are utilized to obtain another anchor point for a watercraft.