| 摘要 |
PURPOSE:To simplify attaching and removing of propulsion device in a small- sized surface boat for one person whose propulsion device is capable of being attached and removed by providing a pneumatic tank which can be used as a float in the propulsion device, and by installing the propulsion device by inserting it from below into the recessed part opened downward provided at the lower part of a boat. CONSTITUTION:A recessed part 4 opened downward at the lower part of a boat body 1 is formed. On the other hand, a tank part 39 made up of a fuel tank 33 and a pneumatic tank 34 is formed on the upper part of a propulsion part 38 of a propulsion device 3. And the capacity of the pneumatic tank 34 is set at the capacity which can float the propulsion device 3 in the water. The propulsion device 3 constituted in this way is inserted into the recessed part 4 from belong the boat body 1. At this time, a fuel supply port 35 and an air supply port 36 are inserted into a piercing hole 41 and a recessed part 42 respectively. As the propulsion device floats in the water by this constitution, a connecting means of the boat body and the propulsion device can be omitted or simplified, and attaching and removing thereof is simplified. |
