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HMS Grenville (R97)
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HMS Grenville (R97)
HMS Grenville was the second ship of this name to serve with the Royal Navy in the Second World War. Grenville and seven other U-class destroyers were ordered as part of the Emergency Programme. She was launched at Swan Hunter and Wigham Richardson Ltd., Wallsend-on-Tyne on 12 October 1942 and commissioned on 27 May 1943.
The Royal Navy's practice had been to name all destroyers of a class with names starting with the class letter, in this "U". However, the Royal Navy had reverted to an earlier practice of naming the flotilla leader after a prominent historical seaman, in this case after Vice Admiral Sir Richard Grenville, an Elizabethan soldier and sailor.
Grenville was one of eight U-class destroyers ordered as the 7th Emergency Flotilla on 12 June 1941, and was fitted as leader. The U-class were War Emergency Programme destroyers, intended for general duties, including use as anti-submarine escort, and were to be suitable for mass-production. They were based on the hull and machinery of the pre-war J-class destroyers, but with a lighter armament (effectively whatever armament was available) in order to speed production. The U-class were almost identical to the S-class ordered as the 5th Emergency Flotilla and the R-class ordered as the 6th Emergency Flotilla earlier in the year, but were not fitted for operations in Arctic waters.
The U-class were 362 feet 9 inches (110.57 m) long overall, 348 feet 0 inches (106.07 m) at the waterline and 339 feet 6 inches (103.48 m) between perpendiculars, with a beam of 35 feet 8 inches (10.87 m) and a draught of 10 feet 0 inches (3.05 m) mean and 14 feet 3 inches (4.34 m) full load. Displacement was 1,777 long tons (1,806 t) standard and 2,528 long tons (2,569 t) full load. Two Admiralty 3-drum water-tube boilers supplied steam at 300 pounds per square inch (2,100 kPa) and 630 °F (332 °C) to two sets of Parsons single-reduction geared steam turbines, which drove two propeller shafts. The machinery was rated at 40,000 shaft horsepower (30,000 kW) giving a maximum speed of 36 knots (41 mph; 67 km/h) and 32 knots (37 mph; 59 km/h) at full load. 615 tons of oil were carried, giving a range of 4,675 nautical miles (5,380 mi; 8,658 km) at 20 knots (23 mph; 37 km/h).
The ship had a main gun armament of four 4.7 inch (120 mm) QF Mk. IX guns, capable of elevating to an angle of 55 degrees, giving a degree of anti-aircraft capability. The close-in anti-aircraft armament for the class was one Hazemayer stabilised twin mount for the Bofors 40 mm gun and four twin Oerlikon 20 mm cannons. This was modified in 1945, with 5 single 40mm Bofors guns added, with one manually operated Mark III mount in the searchlight position and four power-operated "Boffin" mounts replacing the twin Oerlikon mounts. Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted (these were actually spare quintuple mounts with the centre tube removed), while the ship had a depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried.
Grenville was fitted with a Type 291 air warning radar on the ship's tripod foremast, together with a high-frequency direction finding (HF/DF) aerial, with the tripod mast later replaced by a lattice mast. A Type 285 fire control radar integrated with the ship's high-angle gun director, while the Hazemayer mount had an integrated Type 282 radar. As leader, Grenville had a crew of 225 officers and other ranks.
Grenville was laid down at Swan Hunter's Wallsend shipyard on 1 November 1941 and was launched on 12 October 1942. She was completed on 27 May 1943, and assigned the Pennant number R97.
After the end of the Second World War and as the Cold War started, the Royal Navy found itself with a shortage of fast anti-submarine escorts capable of dealing with modern Soviet diesel-electric submarines, with existing sloops and frigates too slow. At the same time, the relatively recent War Emergency destroyers, with their low-angle guns and basic fire control systems, were considered unsuitable for modern warfare, so it was decided to convert these obsolete destroyers into fast escorts, acting as a stop-gap solution until new-build ships, such as the Type 12 frigates could be built in sufficient numbers. The Type 15 frigate was a rebuild of War Emergency destroyers into 'first-rate' anti-submarine ships, with similar anti-submarine equipment as the new frigates. The ships' superstructure and armament was removed, with the ships' forecastle extended rearwards and a new, low but full width superstructure fitted. The revised ships had a much reduced gun armament of one twin 4-inch (102 mm) anti aircraft mount aft of the main superstructure and one twin Bofors mount, but anti-submarine equipment was as fitted to the Type 12s, with Grenville being fitted with two Limbo anti-submarine mortars, directed by Type 170 and 172 sonar.
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HMS Grenville (R97)
HMS Grenville was the second ship of this name to serve with the Royal Navy in the Second World War. Grenville and seven other U-class destroyers were ordered as part of the Emergency Programme. She was launched at Swan Hunter and Wigham Richardson Ltd., Wallsend-on-Tyne on 12 October 1942 and commissioned on 27 May 1943.
The Royal Navy's practice had been to name all destroyers of a class with names starting with the class letter, in this "U". However, the Royal Navy had reverted to an earlier practice of naming the flotilla leader after a prominent historical seaman, in this case after Vice Admiral Sir Richard Grenville, an Elizabethan soldier and sailor.
Grenville was one of eight U-class destroyers ordered as the 7th Emergency Flotilla on 12 June 1941, and was fitted as leader. The U-class were War Emergency Programme destroyers, intended for general duties, including use as anti-submarine escort, and were to be suitable for mass-production. They were based on the hull and machinery of the pre-war J-class destroyers, but with a lighter armament (effectively whatever armament was available) in order to speed production. The U-class were almost identical to the S-class ordered as the 5th Emergency Flotilla and the R-class ordered as the 6th Emergency Flotilla earlier in the year, but were not fitted for operations in Arctic waters.
The U-class were 362 feet 9 inches (110.57 m) long overall, 348 feet 0 inches (106.07 m) at the waterline and 339 feet 6 inches (103.48 m) between perpendiculars, with a beam of 35 feet 8 inches (10.87 m) and a draught of 10 feet 0 inches (3.05 m) mean and 14 feet 3 inches (4.34 m) full load. Displacement was 1,777 long tons (1,806 t) standard and 2,528 long tons (2,569 t) full load. Two Admiralty 3-drum water-tube boilers supplied steam at 300 pounds per square inch (2,100 kPa) and 630 °F (332 °C) to two sets of Parsons single-reduction geared steam turbines, which drove two propeller shafts. The machinery was rated at 40,000 shaft horsepower (30,000 kW) giving a maximum speed of 36 knots (41 mph; 67 km/h) and 32 knots (37 mph; 59 km/h) at full load. 615 tons of oil were carried, giving a range of 4,675 nautical miles (5,380 mi; 8,658 km) at 20 knots (23 mph; 37 km/h).
The ship had a main gun armament of four 4.7 inch (120 mm) QF Mk. IX guns, capable of elevating to an angle of 55 degrees, giving a degree of anti-aircraft capability. The close-in anti-aircraft armament for the class was one Hazemayer stabilised twin mount for the Bofors 40 mm gun and four twin Oerlikon 20 mm cannons. This was modified in 1945, with 5 single 40mm Bofors guns added, with one manually operated Mark III mount in the searchlight position and four power-operated "Boffin" mounts replacing the twin Oerlikon mounts. Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted (these were actually spare quintuple mounts with the centre tube removed), while the ship had a depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried.
Grenville was fitted with a Type 291 air warning radar on the ship's tripod foremast, together with a high-frequency direction finding (HF/DF) aerial, with the tripod mast later replaced by a lattice mast. A Type 285 fire control radar integrated with the ship's high-angle gun director, while the Hazemayer mount had an integrated Type 282 radar. As leader, Grenville had a crew of 225 officers and other ranks.
Grenville was laid down at Swan Hunter's Wallsend shipyard on 1 November 1941 and was launched on 12 October 1942. She was completed on 27 May 1943, and assigned the Pennant number R97.
After the end of the Second World War and as the Cold War started, the Royal Navy found itself with a shortage of fast anti-submarine escorts capable of dealing with modern Soviet diesel-electric submarines, with existing sloops and frigates too slow. At the same time, the relatively recent War Emergency destroyers, with their low-angle guns and basic fire control systems, were considered unsuitable for modern warfare, so it was decided to convert these obsolete destroyers into fast escorts, acting as a stop-gap solution until new-build ships, such as the Type 12 frigates could be built in sufficient numbers. The Type 15 frigate was a rebuild of War Emergency destroyers into 'first-rate' anti-submarine ships, with similar anti-submarine equipment as the new frigates. The ships' superstructure and armament was removed, with the ships' forecastle extended rearwards and a new, low but full width superstructure fitted. The revised ships had a much reduced gun armament of one twin 4-inch (102 mm) anti aircraft mount aft of the main superstructure and one twin Bofors mount, but anti-submarine equipment was as fitted to the Type 12s, with Grenville being fitted with two Limbo anti-submarine mortars, directed by Type 170 and 172 sonar.
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