| 摘要 |
PROBLEM TO BE SOLVED: To provide a ship which has a hull filled with air securely so that specific gravity can be lightened.SOLUTION: A ship 1 which sprays sprayed materials such as herbicide and fertilizer while traveling in a rice field, comprises a polyethylene hull 2 having a hollow part to produce buoyancy, an engine 40 which rotates a propeller 41 to propel the hull 2 and a lead-out pipe 43 which derives the exhaust air of the engine 40 into the hollow. Moreover, the exhaust air of the engine 40 is derived to a tank 30 which stores the sprayed material through a second lead-out pipe 31, and the pressure in the hollow and the pressure in the tank 30 are increased according to the rotation speed of the engine 40. |
