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Six large cargo hatch covers on a capesize bulk carrier ship as she approaches the Egyptian-Japanese Friendship Bridge. A cargo hatch or deck hatch or hatchway is type of door used on ships and boats to cover the opening to the cargo hold or other lower part of the ship. To make the cargo hold waterproof, most cargo holds have cargo hatch.
In the architecture of a ship, a companion or companionway is a raised and windowed hatchway in the ship's deck, with a ladder leading below and the hooded entrance-hatch to the main cabins. [1] A companionway may be secured by doors or, commonly in sailboats , hatch boards which fit in grooves in the companionway frame.
A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]
Hatch dogs around a door on the R/V Knorr. The watertight doors that allow passage through bulkheads between compartments inside a ship can be closed during emergencies to seal off one compartment from another, thus isolating flooding, smoke and heat from adjoining compartments. The objects that are wedged against the door to hold it closed are ...
Bay – a space on the ship that can hold containers, container ships have several bays, these bays are divided into two parts: on-deck and under-deck (hold). If the bay number is odd it is suitable for 20 feet containers, if the bay number is even it is suitable for 40 feet containers. [3] [12]
A dry deck shelter (DDS) is a removable module that can be attached to a submarine to allow divers easy exit and entrance while the boat is submerged. The host submarine must be specially modified to accommodate the DDS, with the appropriate mating hatch configuration, electrical connections, and piping for ventilation, [ 1 ] divers' air, and ...