System for controlling watercraft and watercraft

The marine propulsion device with pivotable lower portion and adaptive bow turning controls addresses the challenge of maintaining watercraft accuracy at a target spot by enabling precise bow turning and minimizing displacement, enhancing position keeping control.

US20260138720A1Pending Publication Date: 2026-05-21YAMAHA MOTOR CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
YAMAHA MOTOR CO LTD
Filing Date
2025-11-17
Publication Date
2026-05-21

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Abstract

A watercraft operating system includes a marine propulsion device and a watercraft operating controller configured or programmed to execute a position keeping control to control the marine propulsion device such that a watercraft is kept at a target spot. The position keeping control includes a first bow turning control to control an output of the marine propulsion device, a rotational direction of a propeller, and a rudder angle to be within a predetermined angular range based on information regarding the target spot of the watercraft and information regarding a position of the watercraft, and a second bow turning control to control the rotational direction of the propeller and the rudder angle to be a first angle greater than a maximum rudder angle of the predetermined angular range based on the information regarding the target spot of the watercraft and the information regarding the position of the watercraft.
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