开启关闭货舱口的油缸,附轴承和轴系。
Hydraulic Cylinders for opening and closing of hopper , including bearings and shafts .
货舱口围板安装检验
Inspection of hatch coaming
为了防止水进入船内而在舱口的周围建的突起的栏板。货舱口围板安装检验
A raised frame around a hatchway on a ship to keep water out . inspection of hatch coaming