Adjutant-class minesweeper

	Broadside view of Bluebird off south end of Mare Island on 29 September 1953.
Class overview
Name	Adjutant class
Builders	Various builders
Operators	United States Navy; Belgian Navy; Royal Danish Navy; Republic of Fiji Navy; French Navy; Hellenic Navy; Indonesian Navy; Islamic Republic of Iran Navy; Italian Navy; Republic of Korea Navy; Japan Maritime Self-Defense Force; Royal Moroccan Navy; Royal Netherlands Navy; Royal Norwegian Navy; Pakistan Navy; Philippine Navy; Portuguese Navy; Royal Saudi Navy; Spanish Navy; Republic of Singapore Navy; Royal Thai Navy; Turkish Navy; Republic of China Navy; National Navy of Uruguay; Republic of Vietnam Navy;
Preceded by	YMS-1 class
Succeeded by	Avenger class
Subclasses	Bluebird class; Redwing class; Falcon class; MSC-218 class; MSC-268 class; MSC-292 class; MSC-294 class; Albatross class;
Built	1952–1978
In service	1953–present
Planned	214
Completed	202
Cancelled	12
Lost	4
Preserved	2
General characteristics
Type	Minesweeper
Displacement	330 long tons (340 t) light; 390 long tons (400 t) full load;
Length	138 ft (42 m) p/p; 144 ft (44 m) o/a;
Beam	27 ft (8.2 m)
Draft	9 ft (2.7 m)
Installed power	4 × Packard 300 hp (220 kW) diesel engines or,; 2 × General Motors 440 hp (330 kW) 8-268A diesel engines or,; 2 × MAN 625 hp (466 kW) V6V 22/30 diesel engines or,; 4 × General Motors 238 hp (177 kW) 6-71 diesel engines or,; 2 × Waukesha Engine L-1616 diesel engines;
Propulsion	Snow and Knobstedt single reduction gear; 2 × variable pitch propellers;
Speed	13 knots (24 km/h; 15 mph)
Complement	36–43
Sensors and ; processing systems	Varies by nation; SPS-53 radar; Decca 45 radar; Decca 707 radar; Decca TM626 radar ; Decca RM914 radar; UQS-1 sonar; UQS-10 sonar;
Armament	Varies by nation; 2 × twin 20 mm (0.8 in) Oerlikon cannons anti-aircraft (AA) mounts; 2 × single 20 mm Oerlikon cannon (AA) mounts; 1 × 40 mm (1.6 in) Bofors (AA) mount; 2 × caliber .50 in (12.7 mm) machine guns; 1 × 81 mm mortar;

The Adjutant-class auxiliary motor minesweepers were built for the United States Navy throughout the 1950s and 1960s, even as late as 1978. Most were loaned to foreign countries under the Military Defense Assistance Pact, with only 24 actually commissioned by the US Navy, with 13 of those eventually being transferred to foreign nations as well. Initially classified as auxiliary motor minesweepers (AMS), on 7 February 1955, they were reclassified as coastal minesweepers (minesweeper, coastal) (MSC).

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