Sunday, March 29, 2009

HMS VANGUARD

Military Papercraft
HMS VANGUARD


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HMS Vanguard was a "Fully Armoured Battlecruiser" of the Royal Navy. She was the biggest and last battleship to be built for the Royal Navy.

Career Royal Navy Ensign
Name: HMS Vanguard
Ordered: 14 March 1941
Builder: John Brown and Company, Clydebank, Scotland
Laid down: 2 October 1941
Launched: 30 November 1944
Commissioned: 9 August 1946
Decommissioned: 7 June 1960
Fate: sold to Shipbreaking Industries 1960, arrived Faslane for scrapping 9 August 1960
General characteristics
Displacement: 46,000 standard,
51,820 tons at full load
Length: 814 ft 6 in (248.3 m)
Beam: 107 ft 7 in (32.8 m)
Draught: 30 ft 6 in (9.3 m)
Propulsion: 8 Admiralty 3-drum water-tube boilers (400 psi, 750 °F)
4 Parsons single reduction steam turbines
4 shafts
130,000 shp (97 MW)
Speed: 30 knots (60 km/h)
Range: 9,000 nautical miles (17,000 km) at 20 knots (37 km/h)
Complement: 1,500
Sensors and
processing systems:
  • 1 x Radar Type 960 air warning
  • 1 x Radar Type 293 target indication
  • 1 x Radar Type 277 height finding
  • 2 x Radar Type 274 15-inch fire control
  • 4 x Radar Type 275 5.25-inch fire control
  • 10 x Radar Type 262 40 mm fire control
Armament:
Armour: Belt 14,0-4.5 in (115-355 mm)
Bulkheads 4.0-12.0 in (102-305 mm)
Barbettes 11.0-13.0 in (280-330 mm)
Turret faces 13.0 in (330 mm)
Conning tower 2.5-3.0 in (65-75 mm)
Deck 5.0-6.0 in (125-150 mm)
Motto: We Lead
Notes: Pennant number 23


Construction

At the outbreak of World War II the Admiralty decided to concentrate the limited shipbuilding resources on vessels that could come into service quickly rather than larger or more powerful ships that might be completed too late to serve in the conflict. Since it would take too much time and demand too many resources to build the 12 triple 16-inch turrets needed for the four Lion class battleships, these four ships were cancelled.

An alternative plan was suggested in 1940 that would use four spare twin 15 inch mountings originally used by HM ships Courageous and Glorious during World War I. These four turrets—enough to arm a new battleship—were removed during the conversions of Courageous and Glorious to aircraft carriers in the late 1920s and had since been kept in store. It was suggested that the turrets and mountings from the two battlecruisers be utilized in a modified Lion design for speedy construction, thus giving rise to the nickname "battleship with her great aunt's teeth".

The Admiralty ordered a design for a 40,000-ton battleship utilizing these weapons, intended to be the core of a Far East Fleet, where her high speed and armament would be a match for Japanese warships. Vanguard was laid down in 1941, by John Brown and Company, Clydebank, Scotland, and her hull was launched in November 1944; in anticipation of Operation Downfall, the expected invasion of Japan, however as a result of Japan's surrender, the ship was not commissioned until 1946.

While the 15-inch mounts were reportedly from Courageous and Glorious, the actual guns were from a pool of guns that had been used on several ships including Queen Elizabeth, Royal Sovereign and others. One single gun had been on either Courageous or Glorious but came to Vanguard via HMS Warspite.[1] Two of the mounts themselves had been intended for Renown and Repulse before their designs were cut down to three turrets apiece with the spares going to Courageous and Glorious. The Vanguard was used in training exercise's with NATO forces in the 1950's and as a training ship untill the late 60's

Career

She performed various duties as flagship, training ship, and even as a "Royal Yacht", when, in 1947, she took the royal family of George VI to South Africa. This was the first time his daughter Elizabeth II, then a princess, ever left Britain [2]. The ship took 17 days to reach South Africa.[2]
HMS Vanguard at anchor.

At the end of 1954 Vanguard sailed to HMNB Devonport, for a refit. On completion in 1955, she was placed in reserve, not returning to the Home Fleet. In 1956 Vanguard became flagship of the Royal Navy Reserve Fleet. While moored in Fareham Creek, during her time in the reserve fleet, scenes for the film "Sink the Bismarck" were filmed aboard. During this time there was some controversy over the ship's future. It was announced in October 1959 that the Vanguard would be scrapped in 1960. Efforts to turn her into a museum were unsuccessful.

On 4 August 1960, when she was to be towed from Portsmouth to the breakers yard at Faslane, Scotland, the whole of the Southsea sea front was packed with people to see her off. As she was being towed towards the harbour entrance, she slewed across the harbour to the Still & West public house and went aground. She was eventually pulled off by tugs and finally made her exit from Portsmouth. Five days later she arrived at Faslane and by the spring of 1962 Vanguard ceased to exist.


Design

Vanguard was unique among British battleships in having remote power control (RPC) for main, secondary and the tertiary guns. There were two director control towers (DCT) for the 15-inch (381 mm) guns, each carrying a "double cheese" Radar Type 274 centimetric fire control set for rangefinding and spotting the fall of shot. There were four US Navy type Mark 37 DCT for the 5.25 inch guns, each carrying the twin domes of Radar Type 275, a centimetric fire control set. Lastly, each Mark VI sextuple 40 mm Bofors mounting had its own CRBF ("close range blind fire") director fitted with RP50 RPC and Radar Type 262. The Type 262 was a centimetric set transmitting through a small parabolic dish giving a narrow search cone. The antenna was spun off-axis at high speed to produce a wider cone capable of locking on to a target. The STAAG Mk.I 40 mm Bofors mounting carried its own Radar Type 262 on the mounting itself. Originally this was located below the gun barrels, but it was subject to excessive vibration and was later relocated to the top of the mounting. Other radar sets carried were Type 960 air warning, Type 293 target indication and Type 277 height finding.


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