Battery Yates

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Battery Yates (1905-1943) - Battery Yates was a reinforced concrete, Endicott Period 3 inch coastal gun battery on Fort Baker (1), Marin County, California. The battery was named in G.O. 194, 27 Dec 1904 after Capt. George W. Yates, 7th U.S. Cavalry, killed at the Battle of Little Big Horn, 25 Jun 1876. Battery construction started in April 1903, was completed in December 1903 and transferred to the Coast Artillery for use 8 Jun 1905 at a cost of $ 41,406.82. Deactivated in 1943.

Battery Yates Emplacement #1 & BC
Battery Yates Emplacement #3 with Fort Baker in the Background
Battery Yates from Above

Endicott Period (1890-1910)

Part of the Harbor Defense of San Francisco. provided protection for the inner harbor mine fields.

Battery Yates Communication's Officer Room

Originally built as an Endicott Period concrete coastal gun battery with six 3" M1902MI rapid fire guns mounted on M1902 Barbette carriages.

This Battery consisted of six emplacements, each with its own 9' by 15' magazine room and an associated utility room. The six utility rooms had various uses, two were store rooms, 3 were tool rooms and one was an oil room. A pentagon shaped Communication's Officer room was located between emplacement #2 and #3. An 11'6" by 21' guard room was located between emplacements #4 and #5. A separate latrine building was located about 100' to the left of emplacement #6. Electrical power was furnished initially from Battery Duncan, only 2.9 KW was required for lighting.

These guns used complete cartridges and the ammunition was stored that way in order to support a high rate of fire. For short periods of time the gun could support as much as 20 to 30 rounds per minute.

Battery Yates Armament (edit list)
Model Serial
Manufacturer Carriage Service
1 3" Rifle 154.35" M1902MI 18 Bethlehem Barbette pedestal, M1902,
#18, Bethlehem
1905-1943 See note 1
2 3" Rifle 154.35" M1902MI 19 Bethlehem Barbette pedestal, M1902,
#19, Bethlehem
1905-1943 See note 1
3 3" Rifle 154.35" M1902MI 20 Bethlehem Barbette pedestal, M1902,
#20, Bethlehem
1905-1943 See note 1 & 2
4 3" Rifle 154.35" M1902MI 21 Bethlehem Barbette pedestal, M1902,
#21, Bethlehem
1905-1943 See note 1 & 2
5 3" Rifle 154.35" M1902MI 22 Bethlehem Barbette pedestal, M1902,
#22, Bethlehem
1905-1943 See note 1 & 3
6 3" Rifle 154.35" M1902MI 23 Bethlehem Barbette pedestal, M1902,
#23, Bethlehem
1905-1943 See note 1 & 3
Source: RCW Form 1, 1 Sep 1923, CDSG, Berhow, Mark A. ed, American Seacoast Defenses: A Reference Guide, 2nd Edition, CDSG Press, McLean, VA, 2004, ISBN 0-9748167-0-1, pages 72-73, 215
Note 1: Guns and carriages transferred 27 May 1905, processed for salvage 7 Mar 1946 CDSG Gun Card Collection from NARA
Note 2: Ordered re-sited to Fort Point (3) 20 Apr 1942
Note 3: Temp relocation to Fort Cronkhite 30 Sep 1942
Battery Yates Plan

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 Yates were not affected by the World War I redistribution or the following 1920 disarmament program.

World War II (1941-1945)

In 1942, four of the guns (emplacements #3 to #6) were ordered relocated to other locations in the San Francisco Harbor Defenses. Emplacements #3 and #4 were finally relocated to Fort Point (3) to a battery on the Barbette Tier in 1943. Emplacements #5 and #6 were first relocated to Battery Kirby Beach in 1942 and then to Battery Gates in 1943. All of the guns and carriages were ordered processed for salvage 7 Mar 1946.

Current Status

Part of the Golden Gate Recreation Area (GGNRA) administered by the National Park Service. No period guns or mounts in place.

Location: Fort Baker, Marin County, California

Maps & Images

Lat: 37.833623 Long: -122.47317

  • Multi Maps from ACME
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  • Elevation: 76.4'



Visited: 19-27 Aug 2009

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