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The belt armor (A) is on the exterior, at the waterline. Also indicated is the main deck (B), the sloping deck armor (C), and the torpedo bulkhead (D). Belt armor is a layer of heavy metal armor plated onto or within the outer hulls of warships, typically on battleships, battlecruisers and cruisers, and aircraft carriers.
Naval armor refers to the various protections schemes employed by warships. The first ironclad warship was created in 1859, and the pace of armour advancement accelerated quickly thereafter. The emergence of battleships around the turn of the 20th century saw ships become increasingly large and well armoured.
The belt armor (A) is on the exterior, at the waterline. Also indicated is the main deck (B), the sloping deck armor (C), and the torpedo bulkhead (D). A torpedo bulkhead is a type of naval armor common on the more heavily armored warships , especially battleships and battlecruisers of the early 20th century.
Armored warships (dreadnought battleships, armored cruisers and later light and heavy cruisers) of the early 20th century carried their main protective armor above the waterline – the "main belt" – which was intended to stop flat-trajectory gunfire from piercing the hull. Below the belt, the armor generally tapered away, to reduce overall ...
Homogeneous armour was typically used for deck armour, which is subject to more high-obliquity impacts and, on some warships such as Yamato class and Iowa class battleships, for lower belt armour below the waterline to protect against shells that land short and dive underwater.
The ships had an armored belt that was 30 cm (12 in) thick at its strongest points, where it protected the ship's vitals, and as thin as 8 cm (3.1 in) in less critical areas, such as the bow and stern. Behind the main belt was a torpedo bulkhead 3 cm (1.2 in) thick. The ships' decks were armored, between 5.5 and 8 cm (2.2 and 3.1 in) thick.
belt armor. Also armor belt. A layer of heavy metal armor plated onto or within the outer hull of a warship, typically on battleships, battlecruisers, cruisers and aircraft carriers, usually covering the warship from her main deck down to some distance below the waterline. If built within the hull, rather than forming the outer hull, the belt ...
The first South Dakota class was a group of six battleships that were laid down in 1920 for the U.S. Navy, but were never completed.Considerably larger and more powerful than the preceding Colorado class, the South Dakota class was designed to achieve 23 knots (43 km/h; 26 mph), they represented an attempt to catch up with the increasing fleet speeds of its main rivals, the British Royal Navy ...