An ammunition wagon.

弹药车。

A box filled with explosives for firing a mine.

地雷箱；炸药箱(用以开矿者)。

A water-tight box or casing used for building structures in water.

沉箱；潜水箱(深入水底不透水之工作室)。

Floating structure for raising sunken vessels.

充气浮筒(可打捞沉船)。

A floodgate for closing the entrance to a dry dock.

船坞水闸。