Patent ID: 6916216

Claim:
A small watercraft comprising: an engine disposed such that an axial direction of a crankshaft thereof substantially corresponds with a front-rear direction of the watercraft, the engine being configured to propel a body of the watercraft; an oil tank provided below the engine such that a longitudinal direction of the oil tank substantially corresponds with the front-rear direction of the body, the oil tank being configured to reserve oil for lubricating the engine; an oil separator configured to separate the oil from a blow-by gas of the engine; and an oil return passage configured to return the separated oil to the oil tank through an oil pipe; wherein one end of the oil pipe is connected to the separator and an opposite end thereof is connected to a return port provided on a rear wall of the oil tank; and wherein the return port has a rear end connected to the oil pipe and is provided with a first hole extending forward in the front-rear direction of the watercraft and substantially horizontally from the rear end, and a second hole extending from the first hole in a direction to form substantially a right angle with respect to the first hole and is configured to have an opening which opens in a direction to form substantially a right angle with respect to the longitudinal direction of the oil tank within the oil tank.