| 摘要 |
PURPOSE:To maintain the function of a navigation light or the like in falling down masts of a ship when the ship passes through the down side of a bridge and the like by equipping the navigation light or the like on a horizontal rack after formation of a parallel link consisting of a main mast and an auxilially mast, each being swingable in the fore and rear directions of the ship, connected together by means of the horizontal rack. CONSTITUTION:Bases of two parallel masts, a main mast 1 and an auxiliary mast 2, are erectably mounted on axes on the deck to rotate freely therearound and are connected with each other through horizontal racks 8-10 to form a parallel link. The main mast 1 is connected to the deck at the intermediate part thereof by means of a fluid cylinder 4. The horizontal rack 8 to 10 are is provided with radars 11, 13 and a navigation light 12 thereon. With the above constitution, the masts can be laid down in passing through the lower side of a bridge during navigation in a riven and the like. And, at the same time, the horizontal racks can maintain their horizontal conditions so as to maintain the function of the navigation light 12.
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