deck-hatch cover 甲板舱口盖

weather deck hatch cover 露天甲板舱口盖

deck hatch 甲板舱口

tween-deck hatch 甲板间舱口

Deck and hatch cover foundations 甲板或舱口盖底座

MAIN DECK HATCH COVER 主甲板舱盖

tween deck hatch 甲板间舱口

Opening deck hatch 可开关甲板舱口

hatch coaming on upper deck 上甲板舱口围板