| 摘要 |
Provided in the present invention is a hatch coaming unit for a submarine comprising: a hatching coaming unit formed at the submarine and having an opening for entrance or exit; a step part formed along the edge of the upper end of the opening and having a downward step; a rust preventing part formed on the step part and made of a rust preventing material; and a hatch cover for opening or closing the opening. The present invention can prevent the rust from occurring on the inner wall and the upper surface of the hatch coaming part by performing a cutting operation along the edge of the upper end of the opening in the hatch coaming part to have a downward step, and welding the cutted part with a rust preventive material. Additionally, the present invention can elongate the life of the hatch coaming part by adhering the rust preventive material to the stepped surface by a welding method, not a coating method. |
