Battery AMTB - Fort Sumter

 (1943-1946) - Battery AMTB - Fort Sumter was a World War II rapid fire 90mm gun battery on Fort Sumter, Charleston County, South Carolina. AMTB stands for Anti Motor Torpedo Boat. Battery construction started 12 Feb 1943, was completed 3 Apr 1943 and transferred to the Coast Artillery for use 2 Jul 1943 at a cost of $ 13,470.53. Deactivated in 1946.



World War II (1941-1945)
The AMTB battery at Fort Sumter consisted of two 90mm M1 guns mounted on 90mm M3 fixed gun mounts and two 90mm M1 guns mounted on M1A1 mobile mounts. The mobile guns remained in storage until required. Concrete pads for both fixed guns were laid on the southeast parapet of the old fort. The battery had a dual mission of defense against fast enemy motor torpedo boats and enemy aircraft. The effective range of the guns was about 8,000 yards. Each weapon required a crew of 15, 9 men in the gun squad and 6 men in the ammunition squad.



Current Status
No period gun or mounts in place.

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