Inspection welding seam and dimension of cargohatchcover.
货舱舱口盖焊缝和尺度检查。
2
Tightness test (opening and closing test, emergency opening and closing test) for cargohatchcover.
货舱舱口盖密性试验(启闭试验、应急启闭试验)。
3
The opening hatchcover method also not to be satisfied that using the warping head of cargo gear not through derrick boom open the hatchcover because using derrick boom is not safe.