Battery AMTB - Marrowstone Point

 (1944-1946) - Battery AMTB - Marrowstone Point was a reinforced concrete World War II rapid fire 90mm gun battery on Fort Flagler, Jefferson County, Washington. Battery construction started 8 Oct 1943, was completed 20 Dec 1943 and transferred to the Coast Artillery for use 25 Mar 1944. Deactivated in 1946. Known within Puget Sound Harbor Defense as Battery AMTB 5.

World War II (1941-1945)
The AMTB battery at Marrowstone Point consisted of two 90mm gun mounted on 90mm M3 gun mounts and two 90mm guns on M1A1 mobile carriages. 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
A part of Fort Flagler State Park, Jefferson County, Washington. No guns or mounts in place.

See Also:
 * Harbor Defense of Puget Sound
 * Fort Flagler

Sources:


 * Seacoast Artillery Ammunition Report of Harbor Defenses of Puget Sound For the period 1 July 1945 to 31 Dec 1945, NARA RG165, E257 Box 68 - Bolling Smith.

Links: 
 * Puget Sound Site