Battery Pasco

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Battery Pasco (1905-1934) - Battery William Pasco was a reinforced concrete, Endicott Period 3 inch coastal gun battery on Fort Michie, Suffolk County, New York. The battery was named in G.O. 194, 27 Dec 1904, after 2nd Lt. William D. Pasco, U.S. Infantry, who was killed in action at Cuartero, Philippine Islands, 20 Oct 1900. Battery construction started in May 1903, was completed in May 1905 and transferred to the Coast Artillery for use 29 Jul 1905 at a cost of $ 22,800.00. Deactivated in 1934.

Endicott Period

Part of the Harbor Defense of Long Island Sound.

Originally built as an Endicott Period concrete coastal gun battery with two 3" M1903 guns mounted on M1903 Pedestal carriages. This was a two story battery with the guns mounted on the upper level and the magazines on the lower level. No shell or powder hoists provided. Electrical power furnished by the emplacement power plant in Battery Palmer.

Battery Pasco Armament (edit list)
Model Serial
Manufacturer Carriage Service
1 3" Rifle 170" M1903 7 Watervliet Pedestal, M1903, #35, American & British 1905-1933 See note 1
2 3" Rifle 170" M1903 41 Watervliet Pedestal, M1903, #36, American & British 1905-1933 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 74-75, 206
Note 1: Guns transferred to Fort Mills in the Philippine Islands on 12 Oct 1933, carriages orders scrapped 1943. CDSG Gun Card Collection from NARA
Battery Pasco 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 Pasco were not affected by the World War I redistribution or the following 1920 disarmament program.

Both guns of Battery Pasco were transferred to Fort Mills in the Philippine Islands on 12 Oct 1933 and the carriages were later ordered salvaged 20 Feb 1943. On 25 Oct 1934 Battery Pasco was abandoned.

Current Status

No period guns or mounts in place.

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

Maps & Images

Lat: 41.202651 Long: -72.119005

  • Multi Maps from ACME
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  • Elevation: 23.72'


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


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