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Recent use of high-tensile steel allows building a structure with less material and weight while retaining similar strength. However, because it is thinner than regular steel, HT steel can corrode more easily, plus it can develop metal fatigue in choppy seas.
The medium weight test is a test performed on the medium weight shock machine. Weight of the test item including fixture to attach it to the test machine shall be less than a maximum of 7,400 pounds (3,400 kg). Heavyweight. The heavyweight test is a test performed on a standard or large floating shock platform.
The powder magazine rooms are separated from the turret platforms by a pair of 1.5-inch STS annular bulkheads under the barbettes for flashback protection. [72] The installation of armor on the Iowa s also differed from those of earlier battleships in that the armor was installed while the ships were still "on the way" rather than after the ...
The bulkhead, left, prevents water from entering at Lock and Dam No. 2 so work can be done on the gates to the chamber, right, Jan. 30 on the Mississippi River in Hastings, Minnesota.
Ship-owners and buyers negotiate scrap prices based on factors such as the ship's empty weight (called light ton displacement or LTD) and prices in the scrap metal market. [70] Scrapping rates are volatile, the price per light ton displacement has swung from a high of $650 per LTD in mid-2008 to $200 per LTD in early 2009, before building to ...
The strength of ships is a topic of key interest to naval architects and shipbuilders. Ships which are built too strong are heavy, slow, and cost extra money to build and operate since they weigh more, whilst ships which are built too weakly suffer from minor hull damage and in some extreme cases catastrophic failure and sinking.
The primary consideration for this new class was the development of the super-heavy 2,700-pound (1,200 kg) armor-piercing shell that had been developed during the construction of the North Carolina class. Standard design practice stated that battleships should be immune to guns of their own calibers at expected battle ranges, but the new super ...
A compartment is a portion of the space within a ship defined vertically between decks and horizontally between bulkheads.It is analogous to a room within a building, and may provide watertight subdivision of the ship's hull important in retaining buoyancy if the hull is damaged.
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