motorized sailboat; auxiliary sailing vessel
A sailing vessel equipped with an auxiliary engine, used when wind is insufficient or for maneuvering in port. Technical nautical term.
Several old motorized sailboats are anchored in this port.
A motorized sailboat can navigate using both sails and an engine.
モーターボート is a small powerboat, typically without sails, unlike 機帆船 which retains sailing capability.
Compound of 機 (engine) + 帆 (sail) + 船 (ship). The term reflects the hybrid nature of the vessel.