Home Artillery Anti-Aircraft 5.25" Anti-Aircraft Gun
5.25" Anti-Aircraft Gun PDF Print E-mail
Written by David Boyd   
Thursday, 01 January 2009 15:00

The 5.25" Anti-Aircraft Gun

                    5.25  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

 
Comments (1)
Overseas & UK 5.25 battery wartime & post war locations and numbers
1 Friday, 20 February 2009 23:16
kenneth griffin
Great site David

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
.

The information is for my private study only

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