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Avenger Class Mine Countermeasures Ship

Avenger class ships are designed as mine sweepers/hunter-killers capable of finding, classifying and destroying moored and bottom mines. These ships use sonar and video systems, cable cutters and a mine detonating device that can be released and detonated by remote control. They are also capable of conventional sweeping measures. The ships are of fiberglass sheathed, wooden hull construction.

Avenger Class Mine Countermeasures Ship Copyright © Mass Communication Specialist 1st Class Joshua Lee Kelsey, U.S. Navy


In active service


Builder: Peterson Shipbuilders - Sturgeon Bay, Wisconsin, USA
Builder: Marinette Marine - Marinette, Wisconsin, USA

The loss of USS Guardian

Guardian ran aground on Tubbataha Reef about 70 nautical miles (130 kilometres) south east of Palawan in the Philippines on the 17th of January, 2013. The U.S. Navy evacuated all 79 crew members from the minesweeper on the following day. On the 19th of January, an assessment team was deployed to plan and execute the vessel's extraction. It was intended for Guardian to be removed from the area by crane ships from Singapore and then be placed on a barge or other ship, since the ship was too damaged to be towed due to multiple hull penetrations. On the 29th of January, the United States Navy announced that the ship would be cut into three sections on the reef prior to removal, resulting in the total loss of the ship. USS Guardian was decommissioned and struck from the Naval Vessel Register on the 15th of February, 2013.


8 Officers
76 Enlisted Personnel


Length: 68.28 meters 224 feet
Beam: 11.89 meters 39 feet
Draft: 4.57 meters 15 feet
Displacement: 1 333.5 metric tons 1 312 long tons
Propulsion: four Isotta-Fraschini Diesel Engines
Performance: 2 400 shaft horsepower
Speed: 14 knots » 25.76 kilometers per hour 16.11 miles per hour

Ship list

Hull number Ship name Commissioned Decommissioned Status
MCM 1 USS Avenger 1987.09.12. 2014.09.30. Decommissioned
MCM 2 USS Defender 1989.09.30. 2014.10.01. Decommissioned
MCM 3 USS Sentry 1989.09.02. - In active service
MCM 4 USS Champion 1991.02.08. - In active service
MCM 5 USS Guardian 1989.12.16. 2013.02.15. Lost
MCM 6 USS Devastator 1990.10.06. - In active service
MCM 7 USS Patriot 1991.10.18. - In active service
MCM 8 USS Scout 1990.12.15. - In active service
MCM 9 USS Pioneer 1992.12.07. - In active service
MCM 10 USS Warrior 1993.04.07. - In active service
MCM 11 USS Gladiator 1993.09.18. - In active service
MCM 12 USS Ardent 1994.02.18. - In active service
MCM 13 USS Dextrous 1994.09.09. - In active service
MCM 14 USS Chief 1994.11.05. - In active service