USS Niagara (PG-52)

History
United States
Name	USS Niagara
Namesake	Fort Niagara
Builder	Bath Iron Works, Maine
Laid down	14 November 1928
Launched	7 June 1929
Acquired	by purchase, 16 October 1940
Commissioned	20 January 1941
Reclassified	CMc-2 (Coastal minelayer), 31 October 1940 PG-52 (Patrol gunboat), 15 November 1940 AGP-1 (MTB tender), 13 January 1943
Fate	Sunk in enemy action, 23 May 1943
General characteristics Alexander Corkum
Type	Patrol gunboat / Motor torpedo boat tender
Displacement	1,022 long tons (1,038 t) full
Length	267 ft (81 m)
Beam	35 ft (11 m)
Draft	17 ft (5.2 m) at full load
Propulsion	2 × diesel engines 2 screws 1,500 shp (1,119 kW)
Speed	16 knots (30 km/h; 18 mph)
Complement	139 officers and enlisted men
Armament	2 × 3"/50 caliber guns (as a gunboat)

The seventh USS Niagara (CMc-2/PG-52/AGP-1) was an auxiliary ship of the United States Navy during World War II.

Niagara was laid down on 14 November 1928 as the steel-hulled civilian yacht Hi-Esmaro by the Bath Iron Works, Maine, launched on 7 June 1929, and delivered on 20 August. She was purchased by the Navy on 16 October 1940 from Mrs. Hiram Edward Manville of New York City. Converted to a coastal minelayer at the New York Navy Yard, and designated CMc-2 on 31 October 1940, the ship was renamed Niagara, on 12 November 1940, and reclassified as a patrol gunboat, PG-52 on 15 November 1940. She commissioned at New York on 20 January 1941.