PROBLEM TO BE SOLVED: To provide a ship that is made to turn around quickly when gliding on a water surface or soil sludge by providing a propeller or a rudder on a deck.SOLUTION: A ship is provided with: a ship body 2 with a ship bottom side configured substantially flat a propeller provided on a deck of the ship body 2 a rudder 5 provided at the rear of the propeller and a plate-like aerial ladder 22 provided on the bow more than a longitudinal center of the ship body 2, and standing in the longitudinal direction. Then, the ship body 2 is rotated by steering the rudder 5, and the aerial ladder 22 provided at the bow side is exposed to wind to thereby generate lift and drag. Then, the bow side is quickly rotated by the lift and drag, and a stern is directed toward the rotation direction and is made to advance quickly in the rotation direction.COPYRIGHT: (C)2015,JPO&INPIT【課題】デッキ上にプロペラや舵などを設けて水面や土泥上を滑走させる際に、迅速に方向転換させる船舶を提供する。【解決手段】船底側がほぼフラットに構成された船体2と、その船体2のデッキ上に設けられたプロペラと、当該プロペラの後方に設けられた舵5と、船体2の長手方向の中央よりも船首に設けられ、当該長手方向に沿って起立する板状の空中ラダー22とを設けるようにする。そして、舵5を切ることによって船体2を回転させ、船首側に設けられた空中ラダー22に風を当てて揚力と抗力を発生させる。そして、その揚力と抗力によって船首側をいち早く回転させ、船尾を回転方向に向けて迅速に回転方向に進ませるようにする。【選択図】図7