US 12,252,225 B2
Apparatus for judging abnormality of marine vessel, method for judging abnormality of marine vessel, and marine vessel
Satoru Hamada, Shizuoka (JP); Akihiro Onoue, Shizuoka (JP); Toshio Suzuki, Shizuoka (JP); Masaru Suemori, Shizuoka (JP); Yoshiyuki Kadobayashi, Shizuoka (JP); and Manami Oyama, Shizuoka (JP)
Assigned to YAMAHA HATSUDOKI KABUSHIKI KASHA, Shizuoka (JP)
Filed by YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata (JP)
Filed on Jun. 1, 2023, as Appl. No. 18/204,426.
Claims priority of application No. 2022-090219 (JP), filed on Jun. 2, 2022.
Prior Publication US 2023/0391431 A1, Dec. 7, 2023
Int. Cl. B63B 79/40 (2020.01); B63B 79/30 (2020.01)
CPC B63B 79/30 (2020.01) [B63B 79/40 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for judging abnormality of a marine vessel, the apparatus comprising:
a controller configured or programmed to function as:
an estimating unit to estimate a marine vessel speed and a pitch angle of a hull of the marine vessel based on a propulsion force of a marine vessel propulsion device to propel the hull and an attitude of the marine vessel propulsion device; and
a judging unit; and
a measuring unit to measure an actual marine vessel speed and an actual pitch angle; wherein
the judging unit is configured or programmed to judge the presence or absence of an abnormality of the marine vessel based on at least one of a comparison result between the estimated marine vessel speed estimated by the estimating unit and the actual marine vessel speed measured by the measuring unit or a comparison result between the estimated pitch angle estimated by the estimating unit and the actual pitch angle measured by the measuring unit.