Water-intake construction for marine propulsion unit.

摘要

The present invention provides a water-intake construction for a marine propulsion unit, including a propulsion casing (16) having a portion which is inflated sidewards and in which a propeller shaft (18) is accomodated, suction inlet ports (25a) provided on both sides of said propulsion casing and each communicated with a water pump (24), and a nose cone (28) mounted on the front surface of said propulsion casing for regularizing water flows in the periphery of said propeller shaft accommodating portion, said marine propulsion unit being characterized in that a water intake passage having an inlet and outlets is provided in said nose cone in such an arrangement that the inlet (34) thereof is positioned at a level lower than that of said suction inlet ports and that the outlets thereof are positioned to face said suction inlet ports.