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.COPYRIGHT: (C)2015,JPO&INPIT【課題】確実に船体内にエアーを充満させて比重を軽くできるようにした船舶を提供する。【解決手段】水田を走行しながら除草剤や肥料などの被散布物を散布する船舶1において、浮力を生じさせるための中空部を有するポリエチレン製の船体2と、前記船体2を推進させるためのプロペラ41を回転させるエンジン40と、当該エンジン40の排気を前記中空部内に導出させる導出管43とを備えるようにする。また、このエンジン40の排気を被散布物を貯留するタンク30側にも第二導出管31を介して導出し、エンジン40の回転速度に応じて、中空部の圧力やタンク30内の圧力を高くする。【選択図】図3
