coaming

舱口栏板, 边材英释中释na raised frame around the cockpit or hatchway of a vessel for keeping out water

1 The acetic acid is corrosive. Please put them in both sides of No. 5 deck, leaving a passage between the hatch coaming and the cargo..醋酸（乙酸）有腐蚀性，请把其装在五舱甲板两边，在货物和舱口围板间留一条通道。

2 The frame number marks, made of steel plate shall be welded and painted on the hatch coaming and bulwark at the place of every 10 frame-space and at every bulkhead..每隔10档肋位和每一舱壁处要用钢板割的肋位标记焊接到舱口围和舷墙上。