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McDermott’s JMOB concept consists of five semisubmersible single-base units (SBUs), each one a thousand feet long, that can be connected and disconnected at sea under their own power. The five-unit JMOB, fully connected end to end, is nearly a mile long and capable of supporting air operations of a variety of fixed- and rotary-winged aircraft (including the C-17 cargo plane) on its 500-foot-wide runway about 120 feet above the water. Capacities include:
Stable base holding 3,500 vehicles, 5,000 containers, and 150 aircraft. The stowed equipment, supplies, and containers can be completely accessed within the JMOB.
A total of 5 million square feet, with 3.5 million square feet (80 acres) of climate-controlled storage space to preposition 300,000 tons of equipment and supplies with 75 million gallons of fuel and 50 million gallons of potable water.
Ten all-purpose berths for ocean-going supply vessels and combat ships.
A transit speed of 15 knots, enabling individual units to be in theater from the U.S. anywhere in the world within 30 days.
A capability to transfer cargo in waves up to Sea State 4. Cargo operations will accommodate all modern commercial and military cargo vessels, including container ships, roll-on/roll-off, break bulk, and tankers. The JMOB can conduct lighterage cargo-handling operations to landing craft and causeways up to Sea State 3 or to the operational limits of the lighter.