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 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 traffic control assisting system (assisting system) stores action data on an action of a moving object, geographic data in which geographic attribute information, which is information on a reference of movement of the moving object, is imparted to individual segments that are meshes into which a map is divided, and responsiveness data on the moving object's responsiveness to an instruction. The assisting system estimates an ideal action of the moving object based on the responsiveness data; calculates a difference between the estimated action and an action in the action data; updates the responsiveness data based on a result of the calculation; estimates probability of presence of the moving object at certain coordinates at each time point based on the action data, the geographic data, and the responsiveness data and generates a geographic E map; and predicts future coordinates of the moving object based on the geographic E map.

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 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 navigation device is disclosed that provides navigational guidance to boats needing to cross a boundary line at a milestone event time. Port and starboard laylines and guidelines may be displayed with the boundary line using wind direction data. The port and starboard layline angles may change with the wind direction, while their lengths may represent a distance traversed by the boat tacking at the port and starboard layline angles for a target time period at a target speed. A predictor line may be displayed extending from the boat in the direction in which the boat is traveling and may have a length indicating a distance traversed by the boat at its current speed until the milestone event time. The predictor line length and color may provide feedback regarding whether the boat will cross the boundary too early or too late given its current speed and direction.

A navigation device is disclosed that provides navigational guidance to boats needing to cross a boundary line at a milestone event time. Port and starboard laylines and guidelines may be displayed with the boundary line using wind direction data. The port and starboard layline angles may change with the wind direction, while their lengths may represent a distance traversed by the boat tacking at the port and starboard layline angles for a target time period at a target speed. A predictor line may be displayed extending from the boat in the direction in which the boat is traveling and may have a length indicating a distance traversed by the boat at its current speed until the milestone event time. The predictor line length and color may provide feedback regarding whether the boat will cross the boundary too early or too late given its current speed and direction.

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.

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.