Battery Closson

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Battery Closson (1920-1948) - Battery Closson was a reinforced concrete, Taft Period 12 inch coastal gun battery at Ahua Point on Fort Kamehameha, Honolulu County, Hawaii. Named in G.O. 13, 1922, for Brigadier General Henry Whitney Closson (Cullum 1638), who served in the U.S. Civil War and who died 15 Jul 1917. Battery construction started September 1917, was completed in April 1920 and transferred to the Coast Artillery for use 4 May 1920 at a cost of $ 302,729.42. Deactivated in 1920.

Battery Closson 1938

Taft Period (1905-1915)

Part of the Harbor Defense of Pearl Harbor.

Originally built as a Taft Period concrete coastal gun battery at Ahua Point with two 12" M1895M1 guns mounted on M1917 Barbette carriages. This was a single story battery with the guns located on open concrete pads away from the magazine complex. Shells were moved from the magazines to the gun loading platform by shell carts. No shell or powder hoists were provided or needed. Electrical power was furnished by the emplacement power plant.

The M1917 Barbette Carriage allowed gun elevations of 35 degrees and azimuth traverses of 360 degree.

Battery Closson Armament (edit list)
Model Serial
Manufacturer Carriage Service
1 12" Rifle 444" M1895M1 30 Watervliet Barbette, M1917, #27, Watertown 1920-1948 See note 1
2 12" Rifle 444" M1895M1 1 Watervliet Barbette, M1917, #26, Watertown 1920-1948 See note 1
Source: RCW Form 1, 1 Mar 1938, CDSG, Berhow, Mark A. ed, American Seacoast Defenses: A Reference Guide, 2nd Edition, CDSG Press, McLean, VA, 2004, ISBN 0-9748167-0-1, pages 154-155
Note 1: CDSG Gun Card Collection from NARA
Battery Closson Plan 1937 before Casemating

World War I (1917-1918)

The U.S. entry into World War I resulted in a widespread removal of large caliber coastal defense gun tubes for service in Europe. Many of the gun and mortar tubes removed were sent to arsenals for modification and mounting on mobile carriages, both wheeled and railroad. Most of the removed gun tubes never made it to Europe and were either remounted or remained at the arsenals until needed elsewhere. The guns of Battery Closson were not affected by the World War I redistribution or the following 1920 disarmament program.

World War II (1941-1945)

Battery Closson was a part of the Harbor Defenses of Pearl Harbor plan throughout World War II. The Battery was casemated in 1942. When the war ended in 1945 the battery was declared surplus. The guns and carriages were processed for salvage in 1948.

Current Status

Battery remains on Hickam Air Force Base across from Mamala Bay Golf Course. No period guns or mounts in place.

Location: Across from Mamala Bay Golf Course, located on Hickam Airfield, Honolulu County, Hawaii

Maps & Images

Lat: 21.3191015 Long: -157.9338741

  • Multi Maps from ACME
  • Maps from Bing
  • Maps from Google
  • Elevation: 9' (trunnion elevation)


  • Grobmeier, Alvin H., Officers of the U.S. Army and Others in Honor of whom Coast Artillery Forts and Batteries in Hawaii Have Been Named, CDSG News, Vol. 6, No. 4 (Nov. 1992), pp. 66-67


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