Written by David Boyd
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Thursday, 01 January 2009 15:00 |
The 5.25" Anti-Aircraft Gun In January 1941 a more powerful anti-aircraft gun was requested by the War Office and the 5.25 Naval gun was chosen, the first guns were completed in 1943. There were two separate mountings for the gun, the Mk IA solely for anti-aircraft use and the Mk IB for a dual anti-aircraft/Coastal defence, these had an armoured turret. The guns were first installed in the London area and naval bases such as Plymouth and Portsmouth. 5.25"Gun Anti-Aircraft data Weight of gun/breech | 9,587lb | Total length | 275.5" | Length of bore | 50 cal | Rifling | 36, 1/30 | Elevation | 0 - +70 degrees | Traverse | 360 degrees | Weight in action | 67,200lb (IA), 11,0880lb(IB) | Rate of fire | 7-10rpm | 5.25" Anti-Aircraft ammunition data HE Shell weight | 80lb | Muzzle velocity | 2,800fps | Max horizontal range | 27,000 yards | Max ceiling | 55,600 feet | Production of 5.25" Anti-Aircraft Guns by year | Pre-War | Sep-Oct 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 (May) | Guns | - | - | - | - | - | 111 | 67 | - | Mountings (IA) | - | - | - | - | - | 53 | 61 | 12 | Mountings (IB) | - | - | - | - | - | 14 | 19 | 3 | Sources - British & American Artillery of WWII, AVIA 22 456 - 514
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Thanks for the info on 5.25 production and photos.
How many 5.25 oversea batteries installed during or after the war.?
Where and how many 5.25 “guns were at each location.
I am particularly interest in Singapore and Hong Kong post was coastal defenses.
Do you have any info on post war coastal and anti aircraft defense in Singapore and Hong Kong?
Also what location and how 5.25 were installed in England during and after the war.
I found information showing the 7 -5.25 guns on Gibraltar & 6 Malta & 2 Pt Mosby and 2 at w/ Australia Leighton battery
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The information is for my private study only