EXHAUST STRUCTURE FOR A JET PROPULSION WATERCRAFT

摘要

To provide an exhaust structure for a jet propulsion watercraft which can simply achieve reduction of exhaust noise. In the exhaust structure 30 for a jet propulsion watercraft, a water jet propeller 20 is provided in a pump room 16 of a watercraft body 11 and an engine 15 for driving is connected to the water jet propeller 20. An exhaust opening 33 of an exhaust pipe 31 attached to the engine 15 is exposed to a pump room 16 and a resonator 40 for sound deadening is provided for the exhaust pipe 31. Further, in the exhaust structure 30 for a jet propulsion watercraft, the resonator 40 is bent in a meandering state such that bent portions thereof are positioned adjacent to each other so that the entire resonator 40 has a substantially flat plate-like configuration. The resonator 40 having a plate-like configuration is laid along a ceiling wall 17 of the pump room 16.