12-Pounder Gun Casemate, Harwich

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Overlooking the harbour from the NE shore of Harwich was a battery of two 12- pounder (5.67 kg) guns, of which one survives. The weight refers to the size of the shell fired.

Overlooking the harbour from the NE shore of Harwich was a battery of two 12- pounder (5.67 kg) guns. The emplacements were 50 yards (45.7 m) apart and although the northern casemate has been demolished this casemate still survives.  It is built of brick and concrete, is 34' (10.36 m) wide, approximately 18' (5.49 m) high, and has walls 2'6" (0.76 m)  thick. Internally, the gun platform is on the upper level reached by steps. This is 12' (3.66 m) wide and set in the floor on a plinth is the circle of six mounting bolts. The diameter of the plinth is 48" (1.22 m) and the diameter of the circle of bolts is 38" (0.97 m). Directly above, on the ceiling, is a 6' (1.83 m) wide painted direction guage in degrees from 045-190. The gun aperture in the E wall measures 10'6" (3.20 m) x 3'7" (1.1 m).

External view of gun emplacement

External view of gun emplacement

Firing arc for gun

Firing arc for gun

Gun mounting

Gun mounting

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