PGM-1-class motor gunboat

The PGM-1-class motor gunboats were a class of eight gunboats converted for the United States Navy from 1943 to 1944 and were succeeded by the PGM-9-class motor gunboats. All eight PGM-1s were converted from SC-497-class submarine chasers. The PGM-1s were created to support PT boats in the Pacific, but were too slow to keep up. The PGM-1s were discontinued and the PGM-9s, also too slow, were shifted to support minesweeping ships instead.

PGM-2 after her conversion
Class overview
Operators	United States Navy
Preceded by	Erie class
Succeeded by	PGM-9 class
Built	1942-1943
Planned	8
Completed	8
Lost	1
General characteristics
Type	Patrol gunboat, motor (PGM)
Displacement	95 tons
Length	110 ft 10 in (33.8 m)
Beam	23 ft (7.0 m)
Draft	10 ft 10 in (3.30 m)
Propulsion	2 × 1,540 bhp (1,150 kW) Electro-Motive Corp. 16-184A diesel engines 2 × shafts
Speed	21 knots (39 km/h; 24 mph)
Armament	Typically: 1 × 3 in (76 mm)/23 dual-purpose gun 1 × 40 mm gun 4 × twin .50 cal (12.7 mm) machine guns 1 × 60 mm mortar

PGM-7 was the only PGM-1-class vessel lost in World War II. The others were sent to the Foreign Liquidation Commission in 1947. Their exact fate is unknown.

Sources

• INFORMATION ON WWII SCs