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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.
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.
Cargo hatch covers for holds are opened and closed by mean of gantry crane. Space on those hatch covers can also be used to carry containers, lumber or project cargoes. [1] Modern open hatch general cargo ships feature advanced designs to enhance efficiency and accommodate diverse cargo types.
The open hatch bulk carrier, often referred to as OHBC or conbulker, is designed to offer direct access to the hold through cargo hatches which extend the full width of the vessel. As a result, large cargo units can be lowered into place. If it is possible, the holds or hatches are designed around standard cargo unit sizes.
MacGregor steel hatch cover Robert MacGregor was a British engineer , who, during the 1920s, concerned over unnecessary losses of North Sea colliers , developed the first steel hatch cover. The design was simple and consisted of five articulated leaves that stowed neatly at the end of each hatch.
A self-propelled dry bulk barge carrying crushed stone near Wuhan, 18 June 2006 The towboat, Donna York, pushing coal up the Ohio River.The tow had just exited the Louisville and Portland Canal at Louisville, Kentucky, 17 May 2009 An empty coal barge showing cargo bay smaller than hull along the Weser River in Bremen, May 2005 15 long coal barges on the Monongahela River near Pittsburgh, 28 ...