下面的话怎么翻译？LoadLine?

fzhrxy

Machinery casings may, however, be exposed if there are no openings giving direct access from the freeboard deck to the machinery space. A door complying with the requirements of regulation 12 is acceptable in the machinery casing, provided that it leads to a space or passageway which is as strongly constructed as the casing and is separated from the stairway to the engine-room by a second weathertight door of steel or other equivalent material.

zhengweihb

然而，如果没有提供从干舷甲板到机舱的直接通道，那么机舱围壁应该是露天的。这时应在通向房间或过道的地方设立一个门，这个门应该具有与机舱围壁一样的结构强度，且应符合规范12的要求。并且在楼梯和机舱之间应设第二个钢制或其他等效材料的风雨密门。
不知道行不行。请各位大侠指正