USS Mahopac (ATA-29) was a United States Navy fleet tug launched in 1919.^[1] She was a Bagaduce-class ship,^[2] a class of 19 steel tugs begun in 1918 which preceded the Navajo-class (later renamed the Cherokee).

USS Mahopac in 1921
History
United States
Name	USS Mahopac
Builder	Puget Sound Navy Yard
Laid down	30 November 1918
Launched	28 February 1919
Commissioned	20 October 1919
Decommissioned	12 September 1946
Stricken	29 October 1946
Identification	AT-29
Fate	Transferred to the Maritime Commission for disposal, 28 April 1947
General characteristics
Class and type	Bagaduce-class fleet tug
Displacement	1,000 tonnes (980 long tons; 1,100 short tons)
Length	156 ft 8 in (47.75 m)
Beam	30 ft (9.1 m)
Draft	14 ft 7 in (4.45 m)
Speed	12.4 knots (23.0 km/h; 14.3 mph)
Complement	44
Armament	2 x 3" gun mounts

The Bagaduce-class tugs were designed to serve as minesweepers and conduct heavy-duty towing work at navy yards.^[2] Mahopac was decommissioned in 1947.

It was one of three vessels of that name in the U.S. Navy to date, after the town of Lake Mahopac, New York. The first was the USS Mahopac (1864), a Canonicus-class Civil War monitor, which served until 1889; the third, USS Mahopac (ATA-196), was a Sotoyomo-class rescue tug, launched in 1944 and struck in 1976.