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Large, Medium-Speed Roll-on/Roll-off (LMSR) refers to several classes of the United States'Military Sealift Command (MSC)roll-on/roll-off type cargo ships. Some are purpose-built for military cargo, while others were converted.

TheBob Hope class are a group of sevendiesel-powered vessels built atAvondale Shipyard inLouisiana between 1993 and 2001 for MSC. They are 951 ft 5 in (289.99 m) long and 106 ft (32 m) wide.

TheWatson class are a group of eightgas-turbine-powered vessels built atNational Steel and Shipbuilding Company (NASSCO) inSan Diego, California between 1996 and 2002 for MSC. They are 951.4 ft (290.0 m) long and 106 ft (32 m) wide.

TheGordon class are group of two LMSRs.Gordon was built inDenmark in 1972 as MVJutlandia, and entered commercial service on 1 June 1973. After some time spent in commercial service she was lengthened byHyundai Heavy Industries in 1984, and later went on to be acquired by the US Navy under a long term charter. She was converted for the Navy atNewport News Shipbuilding and Drydock Company and on delivery to the Navy was assigned to theMilitary Sealift Command on 23 August 1996 under the name USNSGordon.[1] They are diesel-powered, 954 ft (291 m) long and 105 ft 9 in (32.23 m) wide ships.

TheShughart class are group of three LMSRs.Shughart was built asLaura Maersk in 1980 in Denmark byLindovaerftet forA. P. Moller-Maersk Group. She was lengthened in 1987 and again in the early 1990s byHyundai. On May 7, 1996Laura Maersk was delivered to Military Sealift Command and was outfitted at NASSCO. They are diesel-powered, 908.8 ft (277.0 m) long and 105.6 ft (32.2 m) wide ships.