USS GUARDIAN is the fifth AVENGER class Mine Countermeasures Ship and one of the two ships in that class forward deployed to Sasebo, Japan.
| General Characteristics: | Keel Laid: 1985 |
| Launched: June 20, 1987 |
| Commissioned: December 16, 1989 |
| Builder: Peterson Shipbuilders, Sturgeon Bay, Wis. |
| Propulsion System: four diesels |
| Propellers: two |
| Length: 224 feet (68.28 meters) |
| Beam: 39 feet (11.89 meters) |
| Draft: 11,5 feet (3.5 meters) |
| Displacement: 1,312 tons |
| Speed: 14 knots |
| Armament: Mine neutralization system, two .50 caliber machine guns |
| Homeport: Sasebo, Japan |
| Crew: 8 Officers, 6 Chief Petty Officers and 58 Enlisted |