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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.
An overlapping deck to hull joint was bolted together and sealed with epoxy. Stainless steel chain plates were bolted to built-in fiberglass knees. The mast step is also of stainless steel, and is adjustable. For all structural and divisional bulkheads, marine grade waterproof plywood was used. [11]
Hatch coaming (bottom right) on a bugeye. Coaming is any vertical surface on a ship designed to deflect or prevent entry of water. It usually consists of a raised section of deck plating around an opening, such as a cargo hatch. Coamings also provide a frame onto which to fit a hatch cover.
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.
The hull is built using wood frames made from the natural crooks of tree limbs and roots. It is planked with 3.5-inch (8.9 cm) pine. The deck planking is laid fore-and-aft over deck beams on hanging knees. A partially watertight bulkhead is located in the forecastle. [3]
A hull is the watertight body of a ship, boat, submarine, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline.
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