ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,143, issued on Dec. 16, was assigned to YAMAHA HATSUDOKI K.K. (Shizuoka, Japan).
"Marine propulsion system and marine vessel" was invented by Akihiro Tagata (Shizuoka, Japan), Yoshinori Yagi (Shizuoka, Japan) and Hirotaka Tamoto (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A marine propulsion system includes a propulsion device, an up-and-down movement sensor, and a controller configured or programmed to control driving of the propulsion device and perform a wave control including an attitude control to reduce an up-and-down attitude change of a hull by temporarily reducing a vessel speed based on a measurement result of the up-an...