North Carolina

History

Design

The North Carolina class was a class of two fast battleships, North Carolina and Washington, built for the United States Navy in the late 1930s and early 1940s. The navy was originally uncertain whether the ships should be fast enough to counter the Japanese Kongo class, which was believed by the United States to be capable of 26 knots (30 mph; 48 km/h), or should sacrifice speed for additional firepower and armor. The Second London Naval Treaty's requirement that all capital ships have a standard displacement of under 35,000 long tons (35,560 metric tons) prevented the desired objectives from being fully realized within its limits, and the navy considered over fifty designs before one was chosen.

Towards the end of this lengthy design period the General Board of the United States Navy declared its preference for a battleship with a speed of 30 knots (35 mph; 56 km/h), faster than any in US service or under construction, with a main battery of nine 14-inch (356 mm)/50 caliber Mark B guns. The board believed that such ships could fulfill a multitude of roles, as they would have enough protection to be put into a battle line while also having enough speed to escort aircraft carriers or engage in commerce raiding. However, the acting Secretary of the Navy authorized a modified version of a different design, which in its original form had been rejected by the General Board. This called for a 27-knot (31 mph; 50 km/h) ship with twelve 14-inch rifles in quadruple turrets and protection against guns of the same caliber. In a major departure from traditional American design practices, this design accepted lower speed and protection in exchange for maximum firepower. After construction had begun, the United States became concerned over Japan's refusal to commit to the caliber limit of the Second London Naval Treaty, so they invoked the "escalator clause" of that pact and increased the class' main armament to nine 16-inch (406 mm)/45 Mark 6 caliber guns from the original twelve 14-inch guns.

Service

Both North Carolina and Washington saw extensive service during the Second World War in a variety of roles, primarily in the Pacific theater where they escorted fast carrier task forces and conducted shore bombardments. North Carolina shot down between seven and fourteen Japanese aircraft in the Battle of the Eastern Solomons, and later sustained a torpedo hit from Japanese submarine I-15. During the naval battle of Guadalcanal —which was a chaotic night engagement — Washington’s radar-directed main batteries fatally damaged the Japanese battleship Kirishima and caused her to sink next day. In February 1944, Washington crushed her bow in a collision with battleship Indiana. Following repairs, Washington rejoined her sister for the Battle of the Philippine Sea.

After the end of the war, both ships took part in Operation Magic Carpet, the withdrawal of American military personnel from overseas deployments. The vessels were laid up in the reserve fleet until the early 1960s, when North Carolina was sold to her home state as a museum ship, and Washington was broken up for scrap.

In-game historical inaccuracies

• North Carolina has a unique permanent camouflage in that upgrading to Hull (B) will change the ship's camouflage pattern. Measure 12 is tied to Hull (A) while Measure 32 is tied to Hull (B).
• The Measure 12 camouflage was used by North Carolina in 1942. During this time she was armed with five quad 1.1-inch (28 mm) cannons. Hull (A) represents North Carolina after her November 1942 refit, when she was re-equipped with ten quad 40 mm Bofors. By this time she had been repainted with Measure 21 camouflage, which is overall Navy Blue with dark Deck Blue decks. This camouflage scheme should be on Hull (A) and it is currently missing.
• North Carolina’s original anti-aircraft complement of four quad 1.1"/75 (28 mm) cannons and twelve .50 caliber (12.7 mm) M2 Browning machine guns is not represented.
• Actual propulsion is 121,000 hp; the 100,000 hp downgrade was invented by WG.
• Actual speed was 28 knots in 1941 and 26.8 knots in 1945, due to increasing number of AA gun mounts and electronics as the World War 2 progressed.
• The Measure 22 camouflage applied to North Carolina from 1945-1946 is missing.
• The 5"/38 caliber gun's actual rate of fire is 15 rounds per minute; North Carolina’s is 10 rounds per minute. Only Massachusetts has the correct rate of fire.

• 

  The 32,250-long-ton (32,770 t) design "A" was one of the first proposals. Unlike "B" and "C", it was far below the treaty-mandated limit of 35,000 long tons (36,000 t). It would have carried nine 14-inch (356 mm) guns in its main battery; although all of the turrets were forward of the superstructure, the guns could still fire forward provided that they were elevated to 4.5 degrees or more. The secondary battery planned was twelve 5-inch (130 mm) were unusually arranged in triple mounts.

• 

  "F" was an attempt to create a viable combination of an aircraft carrier and a battleship. With regards to the treaty limits, the design had an extremely comfortable margin with a standard displacement of 31,750 long tons (32,260 t; 35,560 short tons). Three catapults were mounted on the bow, while a hangar located under that would contain ten bombers with wings folded. Two non-superfiring turrets would be mounted aft, both holding four 14-in guns.

• 

  "VII" harked back to the days of the slow battleships; with a top speed of 22 knots (25 mph; 41 km/h), it would have been only 1 knot (1.2 mph; 1.9 km/h) faster than the old ""standard" battleships. The weight gained from reducing the speed was added back in firepower and protection: "VII" would have had twelve 14-inch/50 caliber guns in four triple turrets and an immune zone against its own 14-inch gun between 21,400 and 30,000 yards (12.2 and 17.0 mi; 19.6 and 27.4 km).

• 

  "XVI" was one of the final proposals; after "XVI-C" was rejected, a modified version of this design was chosen for the North Carolinas. There were a few major differences between this and the final plan. For example, all exhaust was eventually trunked into two funnels as opposed to one, and the 5-in/38 caliber secondary battery was composed of all dual-mounted guns (no single).

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  A cut-away diagram of the 16-inch turrets on board the North Carolina class.

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  USS North Carolina’s (BB-55) No. 2 machinery space under construction, seen from the port side of the ship on 16 January 1939; the No. 4 boiler has just been installed.

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  The launch of USS Washington (BB-56), 1 June 1940.

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  North Carolina fitting out, April 1941.

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  One of Washington‍’​s main gun turrets is installed upon the ship; note how thick the barbette is, ranging from 11.5 to 16 inches (290–410 mm).

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  North Carolina seen from the air on 17 April 1942.

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  North Carolina fires a three-gun salvo from her number one turret.

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  King George VI of the United Kingdom (left column, walking towards camera) on board Washington, 7 June 1942. An OS2U Kingfisher is in the background.

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  Washington‍’​s tower foremast, seen on 18 August 1942 at the New York Navy Yard; note the SG surface search radar located on the top.

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  I-15‍​’s torpedo opened a gaping hole in North Carolina‍ '​s hull, October 1942.

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  The severe damage done to Washington‍’​s bow after her collision with Indiana, February 1944.

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  Washington steaming at high speed in Puget Sound during post-overhaul trials, 10 September 1945.

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  North Carolina underway on 3 June 1946. By this time, many of the light anti-aircraft weapons (Bofors 40 mm and Oerlikon 20 mm) mounted during the war had been removed, while more modern radars had been mounted on her forefunnel and mainmast.

• 

  Fireworks exploding over North Carolina in 2008, during ceremonies commemorating the commissioning of the submarine USS North Carolina (SSN-777).

See here for links to Update notes.

• Added to the game from the very beginning (alpha version).
• Update 0.4.0:
  • AA defense efficiency reduced to 43%.
• Update 0.5.2:
  • Increased rudder shift times:
    • On the stock hull by +1.16s.
    • On the researchable hull by +2.17s.
  • Credit earnings ratio increased by +7%.
• Update 0.5.3.2:
  • The Type 8 camouflage was renamed to Type 10.
• Update 0.5.6:

• AA defenses were significantly reinforced. Her secondary guns were also slightly improved. Firing accuracy of her main guns was enhanced. Now her guns will be more comfortable to fire.
• Hull (A): All 2x 20mm Bofors Mk1 AA mounts were replaced with 4x 20mm Bofors Mk2 AA mounts. As a result, the average AA damage within the 3.5km AA engagement area radius increased by 27 points (from 132 to 159 points).
• Hull (B): All 4x 20mm Oerlikon Mk20 AA mounts were replaced with 1x 20mm Oerlikon Mk4 mounts, and all 2x 20mm Bofors Mk1 AA mounts were replaced with 4x 20mm Bofors Mk2 mounts. One 4x 20mm Bofors Mk2 AA mount was added on top of the third main turret. As a result, the average AA damage within the 2km AA engagement area radius decreased by 10 points (from 168 to 158 points), and the average AA damage within the 3.5km AA engagement area radius increased by 53 points (from 185 to 238 points).
• Firing range of the secondary guns was increased by 0.5km (from 4.5km to 5km).
• Traverse angles were extended for the second and third main turrets (previously the traverse angles were limited by obstructing AA mounts)
• Firing accuracy of her main guns was increased by adjusting the distribution of shell impact points within the dispersion ellipse.

• Update 0.5.9:
  • The armored model of the hull was refined.
• Update 0.5.10:
  • Fixed models of navigation lights and radars.
• Update 0.6.5:
  • Fixed geometry and textures of the main caliber guns. This change will not affect game performance in any way.
• Update 0.6.6:
  • Improved appearance of the ship using a special technology for high-quality rendering of thin elements (mainly rigging).
• Update 0.6.7:
  • Credits earnings ratio decreased by -5%.
• Update 0.6.12:
  • Detectability when firing main guns in smoke changed to 15.1 km.
  • Detection range of the Vought OS2U Kingfisher aircraft was increased from 4 km to 7 km in air, and to 8 km by sea.
• Update 0.6.13:
  • The survivability of air defense weapons was tested and brought to a single standard. The change affects 40mm guns.
• Update 0.7.4:
  • Corrected the description text of the battleship's high-explosive projectiles.
• Update 0.7.10:
  • Added the special camouflage "Leviathan".
• Update 0.7.12:
  • The rudder shift time for hull (A) has been reduced from 22.8 to 20.0 seconds.
  • The rudder shift time for hull (B) has been reduced from 17.3 to 15.2 seconds.
  • HP recovery rate for the Repair Party consumable was increased from 0.5 to 0.66 % HP per second.
• Update 0.9.4:
  • The thickness of the deck armor was increased from 37 to 38 mm.
• Update 0.9.10:
  • The distribution of HP in the hull was slightly updated.
• Update 0.10.0:
  • The firing range of the secondary battery was increased to 6.6 km.
• Update 0.10.1:
  • Fixed an error that led to the conning tower armor protection not being present on hull (B).
• Update 0.10.3:
  • The stock hull was replaced with a new one, created on the basis of the researchable hull with a modified air defense composition.
• Update 0.10.4:
  • Fixed geometry and textures of the Leviathan camouflage.
• Update 12.5:
  • Sigma value increased from 2.0 to 2.05.
    • Note: This change was only made for the stock hull; The upgraded hull retained the 2.0 sigma.
• Update 12.6:
  • Fixed the incorrect sigma parameter for Hull B of the ship. Now, it's the same as for Hull A and amounts to 2.05 instead of 2.0.