| 摘要 |
<p>Disclosed is a plank unit of a helideck capable of self-draining and being attached and detached. The plank unit of the helideck comprises: a plurality of planks with an upper part to be opened, including a rail unit extended in a side; a joint plate connecting the planks to each other for the planks to be sequentially arranged in the lengthwise direction; and a plurality of grating plates mounted to be able to move along the rail unit, and covering the upper part of the plank.</p> |
