| 摘要 |
PURPOSE: It easily can move forward and backwards in the hull center with the rotatable jet stream propeller. CONSTITUTION: A ship comprises an assembly type jet stream propeller(4), a fixing type jet stream propeller(3), a reverse ejection nozzle(27), and a high velocity type nozzle(26). The assembly type jet stream propeller establishes on the draft vicinity or the ship center line of the ship bottom. The fixing type jet stream propeller establishes on the ship center line as a part of the hull construction. The reverse ejection attachably and detachably establishes in the fixed type jet stream propeller. The high velocity type nozzle is gradually reduced toward home. |
