Exhaust structure of personal watercraft

A personal watercraft comprising:

• a water jet pump including an outlet port, the water jet pump pressurizing and accelerating water taken in from outside of the watercraft and ejecting the water from the outlet port to propel the watercraft as a reaction of the ejecting water;
• a pump room that contains the water jet pump;
• a pump cover covering the pump room from a bottom side of the watercraft, the pump cover being partially or entirely provided with a hollow portion, the hollow portion having an exhaust outlet that opens into the pump room at a location surrounded by walls of the pump room and the pump cover;
• an engine for driving the water jet pump;
• and
• an exhaust passage connected to an exhaust port of the engine, for discharging an exhaust gas from the engine to outside of the watercraft;
• wherein the exhaust passage is configured to cause the exhaust gas to travel successively from the engine, into the hollow portion of the pump cover, through the exhaust outlet of the hollow portion into the pump room, and through the pump room to outside of the watercraft.

A personal watercraft, comprising:

• an engine mounted within a hull, the engine having an exhaust port;
• a water jet pump driven by the engine and configured to eject pressurized water to propel the watercraft, the water jet pump being housed in a pump room formed in a recess of the hull on an underside of the watercraft, the pump room being at least partially covered on a bottom side by a pump cover having a hollow portion formed therein;
• and
• a fluidically connected exhaust passage traveling from the exhaust port, to outside the hull, through the hollow portion of the pump cover, upward into the pump room, and through the pump room to the outside of the watercraft.