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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.
This is a list of the oldest ships in the world which have survived to this day with exceptions to certain categories. The ships on the main list, which include warships, yachts, tall ships, and vessels recovered during archaeological excavations, all date to between 500 AD and 1918; earlier ships are covered in the list of surviving ancient ships.
Patented in 1929, the steel hatch improved ship and cargo safety and had a lasting impact on cargo care. In 1937, to promote and sell his steel hatch covers, Robert MacGregor and his brother Joseph formed MacGregor & Company in Whitley Bay on the north-east coast of England .
The mechanical devices which allow hatches to be opened and closed are called hatch cover. In general, hatch covers are between 45% and 60% of the ship's breadth, or beam, and 57% to 67% of the length of the holds. [4] To efficiently load and unload cargo, hatches must be large, but large hatches present structural problems.
Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up from the deck. Holes on the edges of the plate fit over these bolts and the cover is fastened down with nuts or dogs.
The crew then jury-rigged a sail out of scrap canvas and hatch covers, which allowed the ship to return to Pearl Harbor, where she arrived on 24 February. Temporary repairs were effected there, after which Intrepid steamed on 16 March, escorted by the destroyer USS Remey , to Hunters Point Naval Shipyard in San Francisco for permanent repairs ...