Battery Ingalls

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Battery Ingalls (1904-1942) - Battery Ingalls was a reinforced concrete, Endicott Period 12 inch coastal mortar battery on Fort McKinley, Great Diamond Island. Cumberland County, Maine. The battery was named in G.O. 78, 25 May 1903 after Brevet Major General Rufus Ingalls, U.S. Army, who served with distinction in the Mexican War and the U.S. Civil War, and who died 15 Jan 1893, at New York City, New York. Battery construction started in 1898, was completed in 1903 and transferred to the Coast Artillery for use 18 Jan 1904 at a cost of $ 139,000.00. Deactivated in 1942.

Battery Ingalls Aerial View

Endicott Period

Part of the Harbor Defense of Portland, Maine.

Originally built as an Endicott Period concrete coastal mortar battery with eight 12" M1890MI mortars mounted on M1896MI mortar carriages divided into two mortar pits (A-B) with four mortars in each pit (1-4).

Each mortar pit had a data booth at the rear that conveyed azimuth and elevation information to the gun crews and directed the firing. The data booth was connected to the plotting room via telephone. Between and on each flank of the mortar pits were concrete magazines that stored shells and powder. The magazines were protected with a 20' covering of earth. Shells and powder were wheeled from the magazines to the mortar loading platforms on shot carts.


Battery Ingalls Armament (edit list)
Empl
No
Caliber
Type
Barrel
Length
Model Serial
No
Manufacturer Carriage Service
Dates
Notes
Original Configuration
A1 12" Mortar 141.125" M1890MI 70 Watervliet Mortar, M1896MI, #206, Columbus 1904-1942 See note 1
A2 12" Mortar 141.125" M1890MI 129 Watervliet Mortar, M1896MI, #228, Watertown 1904-1918 See note 2
A3 12" Mortar 141.125" M1890MI 83 Watervliet Mortar, M1896MI, #204, Columbus 1904-1942 See note 1
A4 12" Mortar 141.125" M1890MI 121 Watervliet Mortar, M1896MI, #205, Columbus 1904-1918 See note 2
B1 12" Mortar 141.125" M1890MI 120 Watervliet Mortar, M1896MI, #165, Builders 1904-1942 See note 1
B2 12" Mortar 141.125" M1890MI 79 Watervliet Mortar, M1896MI, #207, Columbus 1904-19418 See note 2
B3 12" Mortar 141.125" M1890MI 71 Watervliet Mortar, M1896MI, #229, Watertown 1904-1942 See note 1
B4 12" Mortar 141.125" M1890MI 116 Watervliet Mortar, M1896MI, #164, Builders 1904-1918 See note 2
Final Configuration
A1 12" Mortar 141.125" M1890MI 70 Watervliet Mortar, M1896MI, #206, Columbus 1904-1942 See note 1
A2 12" Mortar 141.125" M1890MI 83 Watervliet Mortar, M1896MI, #204, Columbus 1904-1942 See note 1
B1 12" Mortar 141.125" M1890MI 120 Watervliet Mortar, M1896MI, #165, Builders 1904-1942 See note 1
B2 12" Mortar 141.125" M1890MI 71 Watervliet Mortar, M1896MI, #229, Watertown 1904-1942 See note 1
Source: RCW Form 1, 31 May 1919, RCB, 31 Dec 1910, CDSG, Berhow, Mark A. ed, American Seacoast Defenses: A Reference Guide, 2nd Edition, CDSG Press, McLean, VA, 2004, ISBN 0-9748167-0-1, pages 140-142
Note 1: Mortars and carriages ordered salvaged on 15 Dec 1942. CDSG Gun Card Collection from NARA
Note 2: Mortars transferred to Morgan 3 Jun 1918, carriages ordered scrapped 26 May 1920. CDSG Gun Card Collection from NARA
Battery Ingalls 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. On 3 May 1918 four mortars from Battery Ingalls were ordered to be dismounted and prepared for shipment. On 3 Jun 1918 the four selected mortars were transferred to Morgan leaving each mortar pit with two mortars in emplacements 1 and 3. The empty mortar carriages were ordered scrapped 26 May 1920.

World War II

Battery Ingalls was obsolete by the beginning of World War II and was deactivated on 15 Dec 1942. The remaining mortars and carriages were ordered salvaged on 15 Dec 1942.

Current Status

Private property. No period guns or mounts in place.


Location: Great Diamond Island, Cumberland County, Maine

Maps & Images

Lat: 43.685505 Long: -70.193045

  • Multi Maps from ACME
  • Maps from Bing
  • Maps from Google
  • Elevation: 57.5'

Sources:

  • U.S. Army Corps of Engineers, FUDS Archives Search Report, Findings, Fort McKinley Military Reservation D01ME042402, December 1994, Portland, ME. Large pdf download
  • U.S.Army, Supplement to the Harbor Defense Project of Portland, Maine, (HDPB-AN-45), 11 Apr 1945, CDSG

Links:

Visited: 1 Jul 2012



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