| 摘要 |
PROBLEM TO BE SOLVED: To provide a jet propulsion boat in which a water inlet can be formed without increasing the number of components. SOLUTION: This jet propulsion boat is constructed to be propelled by a water jet pump P driven by an engine E and a cooling section of the boat is cooled with water taken from inside the water jet pump. A clearance 2 is formed in a mating surface between a component (a front casing section 21Cf) present in the water jet pump P and a component (a rear casing 21Cr) present in the water jet pump P, and then water is taken through the clearance 2. COPYRIGHT: (C)2003,JPO
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