System for correcting effect of tidal current and wind on boat

A system, adapted for correcting an effect of an external disturbance on a boat, the system comprising:

• a control unit, comprising a processor, configured to function as:
• a disturbance obtaining unit, that obtains disturbance information of the boat, the disturbance information of the boat including at least one of a flow direction of the boat while a propulsion unit of the boat is stopped, a flow speed of the boat while the propulsion unit of the boat is stopped, or a rotation direction of the boat while the propulsion unit of the boat is stopped;
• a switching unit, that switches a control mode of the control unit to an automatic driving mode;
• a setting unit, that sets a steering route of the automatic driving mode to drive the boat to a destination position;
• wherein, when the control mode is switched to the automatic driving mode to drive the boat to the destination position, the control unit controls an automatic steering of the boat based on the disturbance information of the boat and the steering route of the automatic driving mode,
• wherein the control unit is configured to calculate:
• a steering route for automatically steering the boat to drive the boat to the destination position, and
• an effect of the external disturbance on the boat when the boat is driven in the automatic driving mode to the destination position,
• wherein the effect of the external disturbance on the boat is calculated from the disturbance information,
• wherein the control unit is further configured to calculate a projected movement information of the boat, the projected movement information of the boat including a projected displacement of the boat that is due to a remaining inertia of the boat at a time the propulsion unit of the boat is stopped, and the projected displacement of the boat is calculated based on a speed of the boat and a steering direction of the boat at the time the propulsion unit of the boat is stopped,
• wherein the control unit is configured to set a compensated steering route, that compensates for the effect of the external disturbance acting on the boat when the boat is driven in the automatic driving mode to the destination position, based on the steering route, the projected information of the boat and the effect of the external disturbance.