Somerset cannon

Somerset cannon

The Somerset cannon was a design originating within the Admiralty, and manufactured by Armstrong's.

Its genesis was the unexpected failure of the Armstrong breech-loading rifles recently developed, and installed on contemporary Royal Navy ships. The "Somerset" was a 6.5 ton 9.2-inch calibre smoothbore muzzle-loader, firing a 100-pound shot. With a charge of 33 pounds of gunpowder, a steel shot would penetrate 5.5 inches of armour at 800 yards.

Providing a mounting which could reliably be worked at sea proved difficult for a piece of this size. Traditional truck carriages were inadequate; historical research revealed that a carriage which was suitable had been suggested by Captain Sir Thomas Hardy (Nelson's Flag Captain) many years before. In this system the gun-carriage remained stationary, and the recoil of the gun was absorbed by a system of sliding friction blocks attached to the carriage and to the gun.

The gun was issued for service, and was mounted in HMS|Achilles|1863|6, HMS|Research|1863|6, HMS|Favorite|1864|6 and HMS|Enterprise|1864|6, but its performance was so poor, largely due to difficulties in controlling the gun, that it was withdrawn from service.


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