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Example of a typical gun port of a 36-pounder battery on a 19th-century ship. The lid is half open, and features an observation window and a ventilation opening, shown half-opened. It opens by pulling two chains that run from the top of the lid and through the hull, and closes by pulling chains running from below the lid and through the gun port.
A ship will sink if the transverse bulkheads are so far apart that flooding a single compartment would consume all the ship's reserve buoyancy. Aside from the possible protection of machinery, or areas most susceptible to damage, such a ship would be no better than a ship without watertight subdivision, and is called a one-compartment ship.
By the Athenian trireme era (500 BC), [1] the hull was strengthened by enclosing the bow behind the ram, forming a bulkhead compartment. Instead of using bulkheads to protect ships against rams, Greeks preferred to reinforce the hull with extra timber along the waterline, making larger ships almost resistant to ramming by smaller ones. [2]
The extra deck is placed at about the middle of the draft of the ship. This design is an alternative to the double-hull tanker design, and is superior in terms of spill volume. Although double-hull design is superior in low energy casualties and prevents spillage in small casualties, in high energy casualties where both hulls are breached, oil ...
Fairlead: a deck fitting for redirecting a line and minimizing chafe. Fiddle (or fiddle rail). a low rail on a counter, stove, or table for preventing items from sliding off when the boat is heeled at sea. Catamarans have less need than monohulls for fiddles. Freeboard: the part of the hull between the waterline and deck of a vessel.
Hull form lines, lengthwise and in cross-section. 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.
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Golden Hinde (launched 1973) is a full-size replica of the Golden Hind (launched 1577). She was built using traditional handicrafts at Appledore, in Devon. [1] She has travelled more than 140,000 mi (230,000 km), a distance equal to more than five times around the globe.