| 摘要 |
PURPOSE: A boat is provided to move in land by mounting buoys in both sides of a hull. CONSTITUTION: A boat comprises cylinder rods(30), supports(41), buoy supports(51), and buoys(50). The cylinder rods are laterally extended or contracted in both sides of a hull. The supports are slidingly received in guides(40) so that the supports can be extended to or contracted from the guides according to the movement of the cylinder rods. The buoy supports support the buoys at the ends of the supports and the cylinder rods. The buoys are supported by the buoy supports to support both sides of the hull.
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