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	USAT St. Mihiel prior to World War II
History
United States
Name	St. Mihiel
Namesake	St. Mihiel, a World War I battlefield in France
Owner	United States government
Operator	United States Army (1920–1941); United States Navy (1941–1943); United States Army (1943–1947);
Builder	American International Shipbuilding
Cost	~$2,000,000
Yard number	672
Laid down	20 November 1918 as Sinnemahoning(?)
Launched	19 November 1919
Completed	September 1920
Acquired	29 October 1920
Commissioned	(Navy) 22 Jul 1941
Decommissioned	(Navy) 16 Nov 1943
Identification	United States O/N: 220739
Honors and; awards	One battle star for World War II service
Fate	Scrapped, 1957
General characteristics
Class and type	EFC Design 1024, Standard, Fabricated, Hog Island Type B
Displacement	8,550 tons (lt)
Length	448 ft (137 m)
Beam	58 ft 2 in (17.73 m)
Draft	28 ft (8.5 m)
Propulsion	Steam turbine
Speed	15.5 knots (28.7 km/h)
Range	24 days
Complement	253
Armament	(WWII) 1 x 5"/38 caliber dual purpose gun, 4 x 3"/50 caliber dp guns, 2 x 20mm caliber Oerlikon twin AA guns

St. Mihiel was a troopship built for the United States Shipping Board by the American International Shipbuilding Corporation at Hog Island, Pennsylvania. The ship was operated from 1922 until mid-1940 as USAT St. Mihiel by the Army Transport Service. In July 1941 the ship was transferred to the Navy which commissioned her USS St. Mihiel with the hull number AP-32. In November 1943, she was transferred back to the Army and converted into the hospital ship, USAHS St. Mihiel.

Construction

St. Mihiel, named in honor of the Army's role in the Battle of Saint-Mihiel in World War I, was an EFC Design 1024 ship built by the American International Shipbuilding Corporation at Hog Island, Pennsylvania for the United States Shipping Board (USSB).^[2]^[3] During the planning stage names for the 120 ships to be built at Hog Island were selected by First Lady Edith Wilson who selected names based on the "aboriginal inhabitants of the United States" with Sinnemahoning being the prospective name for hull number 672 that was to be completed as St. Mihiel.^[1]^[4]^{[note 2]}

The design was for either a troopship or later use as a passenger/cargo ship with a contracted seventy vessels of the type with fifty-eight cancelled and only twelve built.^[2] The ship was launched 19 November 1919 with completion and delivery to the USSB in October 1920 with United States Official Number 220739.^[2]^[3] The ship was 448 feet (136.6 m) in length between perpendiculars, 58 feet (17.7 m) beam, 28 feet .75 inches (8.6 m) loaded draft and powered by a Curtis steam turbine divided into high and low pressure sections, each having three ahead and one astern stages, and double reduction gears rated at 6,000 horsepower provided by General Electric Company.^[5]

Army transport

The newly built ship was transferred to the War Department on 29 October 1920 for operation with the Army Transport Service (ATS) homeported at the Brooklyn Army Base in New York.^[3] Until 1923 St. Mihiel generally ran between the New York Port of Embarkation and Antwerp, Belgium.^[3] After transporting the last United States troop contingent from Germany from Antwerp in January 1923 she was assigned the New York—San Juan, Puerto Rico—Panama until 1926.^[3] During this period of Atlantic service St. Mihiel was awarded the Army's Efficiency ("E") pennant for Atlantic transports in 1922, transported the 213th Coast Artillery from New York to Fort Monroe for summer training and engaged in hurricane relief operations at San Juan during September 1928.^[3]

St. Mihiel was transferred to the ATS Pacific Fleet and homeported at the San Francisco Port of Embarkation, Fort Mason, California where she was placed on the San Francisco—Honolulu—Panama—New York route during 1931 and 1932 until laid up at Fort Mason 16 November 1932.^[3] In April 1935 the ship was returned to service for the transport of 287 Midwestern farm families on relief during the depression to Alaska to establish a new life.^[3] The ship was again laid up between 28 July 1939 and 15 Sep 1939 at Brooklyn with the crew transferred to USAT Leonard Wood.^[3] St. Mihiel operated on the Alaska route until transfer to the Navy.^[3]

World War II

Navy service

On 22 July 1941 the ship was transferred to the Navy, classed as a transport with hull number AP-32, and commissioned as USS St. Mihiel the same day. St. Mihiel continued to perform the same Alaska service as she had for Army after commissioning. In July 1942, she transported the wreckage of the Akutan Zero to San Diego, which became first flyable Zero fighter acquired by the United States during the war.^[6]

Into 1943, she called regularly at ports on mainland Alaska and in the eastern Aleutians. In May 1943, she participated in the occupation of Attu; then resumed more routine transport duties. On 9 September 1943 she headed south to San Francisco. On the 23rd, she steamed west to Hawaii and from there began her last voyage for the Navy. Transiting the Panama Canal in mid-October, she steamed on to Boston, where she was decommissioned on 16 November 1943. St. Mihiel received one battle star for her service during the occupation of Attu: 11–29 May 1943.^[6]

Return to Army service

St. Mihiel was returned to the Army which converted her to the Army hospital ship USAHS St. Mihiel. The ship had been considered for use as a full hospital ship for Army use in November of 1940 as the United States acquired remote bases without hospital facilities but transport needs prevailed.^[7] In June 1943 a plan for Army hospital ships was revived for the evacuation of helpless patients from forward area hospitals to the United States with St. Mihiel again among those chosen.^[8] The ship was converted with a capacity for 504 patients making the first voyage as USAHS St. Mihiel on 10 May 1944 for North Africa.^[9]

Post war

The ship reverted to transport service in 1946.^[3] On 28 October 1947 she was delivered to United States Maritime Commission and laid up until scrapped at Baltimore by Patapsco Scrap Company in 1957.^[10]

Footnotes

^ Army did not "commission" its ships in the formal sense, they were in service.
^ Search of contemporary references at time of launch do not indicate this name in use. McKellar generally gives contract names where used with completion name superseding. In this case no such prospective or "laid down as" name is shown. Sinnemahoning may have died as a name by the time this ship's keel was laid.

References

^ ^a ^b Colton: American International Shipbuilding (AISC).
^ ^a ^b ^c ^d ^e McKellar: Part III, Contract Steel Ships, p. 137.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Clay 2011, p. 2176.
^ de Tankerville 1918, p. 545.
^ International Marine Engineering September 1920, p. 738.
^ ^a ^b Dictionary of American Naval Fighting Ships: St. Mihiel.
^ Larson 1944, p. 9.
^ Larson 1944, pp. 22, 36.
^ Wardlow 1956, p. 219, Table 13.
^ NavSource Online.

Bibliography

Clay, Steven E. (2011). U.S. Army Order Of Battle 1919-1941 (PDF). Volume 4. The Services: Quartermaster, Medical, Military Police, Signal Corps, Chemical Warfare, And Miscellaneous Organizations, 1919-41. Vol. 4. Fort Leavenworth, KS: Combat Studies Institute Press. ISBN 9780984190140. LCCN 2010022326. Retrieved 20 July 2015.
Colton, T. (22 July 2010). "American International Shipbuilding (AISC)—Hog Island Shipyard, Philadelphia PA". Shipbuilding History. T. Colton. Archived from the original on 2 April 2015. Retrieved 21 July 2015.
- "Current website". Retrieved 27 November 2020.
International Marine Engineering (1920). "Troopships Completed at Hog Island". International Marine Engineering. 25 (September 1920). Simmons-Boardman Publishing Corporation: 737–740. Retrieved 20 July 2015.
Goldberg, Mark H. (1991). The Hog Islanders: the Story of 122 American Ships. American merchant marine history series. Vol. 1. Kings Point, N.Y.: American Merchant Marine Museum. LCCN 91073557. OCLC 25317937.
Larson, Harold (1944). Army Hospital Ships. Washington, D.C.: Office of the Chief of Transportation, Army Service Forces, U. S. Army.
McKellar, Norman L. "Steel Shipbuilding under the U. S. Shipping Board, 1917-1921, Part III, Contract Steel Ships". Steel Shipbuilding under the U. S. Shipping Board, 1917-1921. ShipScribe. Retrieved 20 July 2015.
Naval History And Heritage Command. "St. Mihiel". Dictionary of American Naval Fighting Ships. Naval History And Heritage Command. Retrieved 20 July 2015.
NavSource Online. "USAHS St. Mihiel". Service Ship Photo Archive. NavSource. Retrieved 20 July 2015.
de Tankerville, R. (1918). "Shipbuilding Notes". Shipping (16 March 1918). New York: Shipping Publishing Company: 545. Retrieved 21 July 2015.
Wardlow, Chester (1956). The Technical Services—The Transportation Corps: Movements, Training, And Supply. United States Army In World War II. Washington, D.C.: Center Of Military History, United States Army. LCCN 55060003.