Weapon-class destroyer

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Engels vlootbezoek aan Amsterdam. Afmeren jagers, Bestanddeelnr 912-9893.jpg
HMS Scorpion in Amsterdam on 29 September 1961
Class overview
NameWeapon class
OperatorsNaval Ensign of the United Kingdom.svg  Royal Navy
Preceded by C class
Succeeded by Battle class
Planned20
Completed4
Cancelled16
General characteristics as built
Type Destroyer
Displacement
  • 1,980  tons (standard)
  • 2,825 tons (full)
Length365 ft (111 m) o/a, 341.5 ft (104.1 m) p/p
Beam38 ft (12 m)
Draught14.5 ft (4.4 m)
Propulsion2 x Foster-Wheeler water-tube boilers, Parsons double-reduction geared steam turbines, 40,000  shp (30,000 kW) on 2 shafts
Speed31-knot (57 km/h)
Range630 tons oil, 5,000 nmi (9,300 km) at 20 knots (37 km/h)
Complement234 (256 in Battleaxe)
Sensors and
processing systems
  • Radar Type 293M target indication
  • Radar Type 291 air warning
  • Radar Type 275 fire control on Director Mk. VI(M)
  • Radar Type 262 STAAG fire control
Armament
General characteristics (A/D conversion)
Sensors and
processing systems
  • Radar Type 965 surveillance, antenna array AKE-1
  • Radar Type 293Q target indication
  • Radar Type 262R fire control on director MRS-8
  • Radar Type 262 STAAG fire control

The Weapon class was a class of destroyers built for the British Royal Navy towards the end of World War II. They were the smaller counterpart to the Battle class (which followed them) and were the first new destroyer designs for the Royal Navy since the Second World War Emergency Programme. 20 ships were planned, of which only 13 were laid down and 7 were launched, but the cessation of hostilities resulted in only 4 being completed for service. Two of the ships had been previously ordered (as Celt and Centaur) as part of the planned C class, or 15th Emergency flotilla, of 1944, but the orders were changed to the new design.

Contents

Design

The Weapon class were an intermediate size built to take advantage of slipways that were too small to be used to build Battle-class destroyers. [1]

The hull length was not much increased over the War Emergency Programme design, but beam and draught were increased to allow for a displacement increase, as the latter design was grossly overweight with the addition of wartime technology to a relatively small hull. Two full sets of torpedo tubes were carried, a somewhat retrospective feature in a late-war design.

A criticism of the older designs was the use of adjacent boiler rooms. This had been adopted to allow for a single funnel, to lower the silhouette and increase the deck space of the relatively small hull. However, this made the ship vulnerable to being disabled by a single hit amidships. To remedy this, the Weapon class adopted the "unit" system, of side-by-side boiler and engine rooms with alternate port/starboard arrangement. This was standard practice in United States Navy ships, but these were generally far larger than their Royal Navy counterparts. The unit arrangement meant that 2 funnels were needed. The forward funnel was trunked up through the foremast and there was a small stump funnel between the torpedo tubes. This led to an unusual and rather unbalanced appearance, similar to that of the Daring class, and the Weapons were not the most attractive of ships.

The main improvement over earlier ships was to remedy the woefully inadequate arrangements for anti-aircraft defence. To this end, three twin 4-inch Mark XIV mountings were carried, remotely controlled by a Type 275 Radar equipped Mark VI(M) director, allowing full blind-fire against aircraft targets. The light battery consisted of 2 of the new STAAG (Stabilised Tachymetric Anti-Aircraft Gun) mounts for twin Bofors 40 mm guns and two single weapons on Mk. II mounts in the bridge wings. The STAAGs were carried on either side aft, and each had its own Type 262 Radar and predictive fire control computer, allowing for automatic blind-fire engagement of targets. The STAAGs were excellent weapons on paper and the firing range, but when exposed to the vibration of a naval gun mounting and the rigour of the elements they were less than reliable. Coupled with a mounting weight of 17 tons, they were something of a disappointment and their post-war service was limited. Type 293 Radar was carried on the lattice foremast for target indication.

To increase the anti-submarine capability of the class, it was decided to reduce the number of 4-inch mounts to 2, and to instead carry 2 "Squid" anti-submarine mortars. In Battleaxe and Broadsword, these replaced 'B' gun, in the others it was 'X' that was lost. The latter arrangement was in fact preferable for the location of the "squid", but less so for gunnery, as it meant that the main weapons were unable to fire aft, which was a criticism also levelled at the Battle class.

All four ships were plagued by their machinery, as the steam turbines had numerous design flaws. The problems were remedied by removing the steam feed to the lower half of the reversing turbine, but this halved reversing power, and as a consequence these ships were slow to decelerate and handled rather sluggishly. This problem proved fatal for Battleaxe, when she was unable to manoeuvre quickly enough to prevent herself being rammed by the frigate Ursa in the Clyde in 1962. The damage was so catastrophic that it was beyond economical repair and she was written off as a total loss and scrapped.

The Weapons were never an entirely satisfactory design, and were criticised for their light gun armament and overly heavy torpedo outfit. Perhaps best thought of as fast fleet frigates, they undoubtedly possessed a quantum increase in fighting efficiency over the wartime emergency ships, and were more than capable of facing the increased threat of the enemy submarine and aircraft. It is possible that the mysterious G or Gael class design, which possessed 2 twin 4.5-inch (110 mm) semi-automatic Mark. VI guns was an attempt to remedy some of the deficiencies of the Weapons.

Orders and construction

The two ships authorised under the 1942 Programme as the Centaur and Celt of the "CE" class were ordered from Whites of Cowes on 3 February 1942; they were renamed Tomahawk and Sword when the order was altered to the new "Intermediate" design.

The 1943 Programme authorised 17 ships to this design. The first six were ordered on 2 April 1943 - Battleaxe and Broadsword (from Yarrow); Carronade and Claymore (from Scotts); and Crossbow and Culverin (from Thornycroft). The next seven were ordered on 24 April - Cutlass and Dagger (from Yarrow); Dirk, Grenade and Halberd (from Scotts); Howitzer (from Thornycroft); and Musket (from White). A final four were ordered on 27 May - Longbow (from Thornycroft); Poniard (from Scotts); and Rifle and Spear (from Denny).

Three ships were cancelled on 22 November 1944 - Grenade, Halberd and Poniard. Eight more were cancelled on 15 October 1945 - Sword, Claymore, Dagger, Dirk, Howitzer, Longbow, Musket and Spear. Another four were cancelled on 23 December 1945 - Carronade, Culverin, Cutlass and Rifle.

Modification

The class were something of an oddity in the post-war Royal Navy, and did not figure in any of the plans for the fleet of the future. They were laid up by 1956, but there emerged a need for fast fleet Aircraft Direction (A/D) ships to accompany the carrier strike force and act as radar pickets, directing fighter cover. The Battle class were being modified for this role, but as a stop-gap, the Weapons were given a more limited conversion. This involved adding a large mainmast amidships for the Radar Type 965 with an AKE-1 "single bedstead" antenna array, with the torpedo tubes replaced by radar offices. The director was replaced with a lighter MRS-8 pattern, possibly to lower topweight associated with the new radar, and all ships had the squids mounted aft and the guns mounted forward. They lacked specialised height finding and aircraft direction radar sets that the Battles possessed, and so were rapidly superseded and returned to reserve.

Ships

NamePennantBuilderLaid DownLaunchedCommissionedFate
Battleaxe G18/D118 Yarrow and Company, Scotstoun 22 April 194412 June 194523 October 1947Broken up, 1964
Broadsword G31/D3120 July 19445 February 19464 October 1948Broken up, 1968
CutlassG7428 September 194420 March 1946not completedCancelled 23 December 1945, broken up at Troon, 1946
DaggerG237 March 1945not launchedCancelled 23 December 1945, scrapped on slip
Crossbow G96/D96 John I. Thornycroft and Company, Woolston 26 August 194420 December 19454 March 1948Broken up, 1972
CulverinG2827 April 1944March 1946not completedBroken up at Grays, 1946
HowitzerG4426 February 1945not launchedCancelled 15 October 1945, scrapped on slip
LongbowG5511 April 1945
Scorpion (ex-Tomahawk, ex-Centaur)G64/D64 J. Samuel White, Cowes 16 December 194415 August 194617 September 1947Broken up, 1971
Sword (ex-Celt)G8517 September 1945not launchednot completedCancelled 15 October 1945, scrapped on slip
MusketG78not laid downCancelled 15 October 1945
Lance (ex-Rapier)none allocated
CarronadeG82 Scotts Shipbuilding & Engineering Company, Greenock 26 April 19444 April 1946Cancelled 23 December 1945, broken up at Troon, 1946
ClaymoreG34not laid downnot launchedCancelled 15 October 1945, scrapped on slip
DirkG02Cancelled 15 October 1945
GrenadeG53Cancelled 22 November 1944
HalberdG99
PoniardG06
RifleG21 William Denny & Brothers, Dumbarton 30 June 1944Cancelled 27 December 1945, scrapped on slip
SpearG3029 September 1944

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References

  1. Brown Nelson to Vanguard 2000 Chatham Publishing p94

General references