The Marine Corps fielded the heavy tactical vehicle system during the mid 1980s. The Logistics Vehicle System (LVS) is a modular system consisting of a MK48 front power unit and, originally, four interchangeable rear body units (RBU). The front power unit and rear body units are joined by a hydraulically powered articulated joint that assists in steering the vehicle and allows a degree of independent movement between the front and rear units for more mobility. The articulated joint transfers automotive power to the RBU axles and hydraulic power for any hydraulically operated equipment. The completed units are 8x8 systems with two front steering axles. The LVS has an off road payload of 12.5 tons and an on road payload of 22.5 tons.
The MK48 Front Power Unit is an enclosed cab, diesel powered, automatic transmission, 4x4 vehicle that provides all automotive and hydraulic power for the LVS combinations.
The MK14 Container Transporter Rear Body Unit is a flatbed trailer for transporting bulk cargo and standardized cargo containers. It is equipped with ISO lock points for securing 20 foot standard containers, the Marine Corps Field Logistics System (FLS) bulk liquid tanks and pump units (SIXCONS), and standard Marine Corps Expeditionary Shelter System (MCESS). The MK14 can also be equipped with a tow bar adapter kit that allows it to be tandem towed as an un-powered trailer behind a MK48/MK14 combination. The tandem tow is limited to the 12.5 ton off road payload.