| 摘要 |
PROBLEM TO BE SOLVED: To provide a ship navigation regulation structure that cannot be lifted easily while it is in service.SOLUTION: A ship navigation regulation structure that is installed on a water surface and defines a water area where ship navigation is regulated includes: floats 20 that give buoyancy to the ship navigation regulation structure so as to float it on the water surface; float interval holding materials 30 made of elastic materials which are provided between the adjacent floats 20; and rope bodies 40 which are communicated with the floats 20 and the float interval holding materials 30, and arrange the floats 20 and the float interval holding materials 30. The float interval holding materials 30 are arranged in a state of being sandwiched and compressed by the adjacent floats 20. Also, the float interval holding materials 30 have multilayer tube bodies in which tube bodies 31, 33, 34 and 35 whose diameters increase sequentially surround the rope bodies. |
