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Mine Countermeasures Support Ship (MCS)
Index


Mine Countermeasures Ships are designed to support minesweeping operations in forward areas. The designation first appears on the Navy list in 1956, when five "mothballed" Vehicle Landing Ships (LSV) were redesignated MCS-1 through 5. A former LST was redesignated MCS-6 in 1959, and in 1962 a Dock Landing Ship (LSD) became MCS-7.

MCS-1 and 2 were converted for mine warfare work in 1963-67 and commissioned for active service. The other three former LSVs (MCS-3 through 5) remained in the Inactive Fleet and have never been converted from their original LSV configuration. Orleans Parish (MCS 6) served the Mine Force under her LST designation for some years before being redesignated. Her bow doors welded shut and her tank deck converted to headquarters, supply, and maintenance spaces, she was an administrative and support ship with no mine warfare capability of her own. Epping Forest (MCS 7) used her LSD well deck to accommodate minesweeping boats (MSB) and minesweeping launches (MSL). She carried 10 MSLs and an Explosive Ordnance Demolition (EOD) unit, and could support two mine countermeasures helicopters.

Catskill and Ozark (MCS 1 and 2) represent the full development of this type. They each carry and operate 20 MSLs and two embarked helicopters as well as an EOD unit. They can provide some logistics support for MSC and MSO type minesweepers, and have a minelaying capability.

The Amphibious Assault Ship (Helicopter) Inchon (LPH 12) was converted to a Mine Countermeasures Ship in March 1995, and designated MCS-12.


Click on ship name to view image(s) and DANFS history.

Mine Countermeasures Support Ship (MCS) Index
Catskill Class Mine Countermeasures Support Ship
(MCS-1 & MCS-2)
Length Overall: 455' 5"
Extreme Beam: 60' 2"
Displacement: 9,040 tons
Max. Draft: 20'
Complement: 564
Armament: Two 5"/38 cal. and eight 40mm
Designed Speed: 20.3 knots
Engines: General Electric Geared Turbines, two shafts
Designed Shaft Horsepower: 11,000
MCS-1 Catskill ex LSV-1
MCS-2 Ozark ex LSV-2
Osage Class Mine Countermeasures Support Ship
(MCS-3 to MCS-5)
Length Overall: 451' 4"
Extreme Beam: 60' 3"
Displacement: 8,160 tons (MCS-3 & MCS-4), 8,790 tons (MCS-5)
Max. Draft: 20'
Complement: 564
Armament: Two 5"/38 cal. and four twin 40mm
Designed Speed: 20.3 knots
Engines: General Electric Geared Turbines, two shafts
Designed Shaft Horsepower: 11,000
MCS-3 Osage ex-LSV-3
MCS-4 Saugus ex LSV-4
MCS-5 Monitor ex LSV-5
Orleans Parish Class Mine Countermeasures Support Ship
(MCS-6)
Length Overall: 328'
Extreme Beam: 50'
Displacement: 3,640 tons
Max. Draft: 14'
Complement: 119
Armament: Two twin 40mm and one single 40mm
Designed Speed: 11.6 knots
Engines: General Motors 12-567 diesel engines,
two shafts
Designed Shaft Horsepower: 1,700
MCS-6 Orleans Parish ex-LST-1069 Reclassified T-LST-1069
Epping Forest Class Mine Countermeasures Support Ship
(MCS-7)
Length Overall: 457' 8"
Extreme Beam: 72' 1"
Displacement: 8,700 tons
Max. Draft: 18'
Complement: 262
Armament: Two quad 40mm
Designed Speed: 15 knots
Engines: Two Skinner Uni-Flow reciprocating engines, Geared Turbines, two shafts
Designed Shaft Horsepower: 7,400
MCS-7 Epping Forest ex LSD-4
Inchon Class Mine Countermeasures Support Ship
(MCS-12)
Length Overall: 592'
Extreme Beam: 105'
Displacement: 18,474 tons
Max. Draft: 27'
Complement: 667
Armament: Two Phalanx Close-in Weapons System and four 25mm Bushmaster cannons
Designed Speed: 22 knots
Engines: Geared Turbine, one shaft
Designed Shaft Horsepower: 22,000
MCS-12 Inchon ex LPH-12

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