Battery Benjamin

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Battery Benjamin (1908-1947) - Battery Benjamin was a reinforced concrete, Endicott Period 6 inch coastal gun battery on Fort Michie, Suffolk County, New York. The battery was named in G.O. 20, 19 Mar 1902, after 1st Lt. Calvin Benjamin, 4th U.S. Artillery, who was killed in the assault on Mexico City, 13 Sep 1847, during the Mexican-American War. Battery construction started in September 1902, was completed 26 Mar 1908 and transferred to the Coast Artillery for use 25 Nov 1908 at a cost of $ 54,742.00. Deactivated in 1947.

Endicott Period

Part of the Harbor Defense of Long Island Sound.

Originally built as an Endicott Period concrete coastal gun battery with two 6" M1900 guns mounted on M1900 Pedestal carriages. This was a two story battery with the guns on the upper level and the magazines on the lower level. Shells were moved from the magazine level to the gun loading platform by two back delivery Taylor-Raymond electric shell hoists. No powder hoists provided. Electrical power provided by emplacement power plants in Battery Benjamin and Battery Palmer.

Both shell hoists were reported removed on 17 Aug 1915 under an order issued 7 Jan 1915. A concrete 15' CRF station was built on the right flank of Battery Benjamin and accepted for service on 20 Mar 1914.

Battery Benjamin Armament (edit list)
Model Serial
Manufacturer Carriage Service
1 6" Rifle 310.4" M1900 37 Watervliet Pedestal, M1900, #9, Watertown 1908-1947 See note 1
2 6" Rifle 310.4" M1900 38 Watervliet Pedestal, M1900, #10, Watertown 1908-1947 See note 1
Source: RCW Form 1, 1 Nov 1926, Coast Defense Study Group, Berhow, Mark A. ed, American Seacoast Defenses: A Reference Guide, 2nd Edition, CDSG Press, McLean, VA, 2004, ISBN 0-9748167-0-1, pages 96-97, 206
Note 1: CDSG Gun Card Collection from NARA
Battery Benjamin Plan

World War I

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 Benjamin were not involved in the World War I redistribution or in the following 1920 disarmament program.

The CRF station was remodeled in 1923 and accepted for service on 23 Jul 1923.

World War II

In 1942 two shell hoists were transferred from Battery House to Battery Benjamin to replace the two that had been removed in 1915.

The guns and carriages of Battery Benjamin were recommended for salvage on 26 Jan 1946 and the battery was declared excess on 30 Apr 1947.

Current Status

No period guns or mounts in place.

Location: Great Gull Island, Suffolk County, New York.

Maps & Images

Lat: 41.203432 Long: -72.117155

  • Multi Maps from ACME
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  • Maps from Google
  • Elevation: 29.22'


  • U.S.Army, Supplement to the Harbor Defense Project of Long Island Sound, (HDLIS-AN-45), 15 Feb 1945, CDSG


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