The ships, crewed by civilian mariners, are stowed with military equipment and supplies and kept prepared for rapid availability during military and humanitarian relief operations.
This contract, which begins September, consists of a base period of 30 days with four one-year options.
If all options are exercised, the total contract value will reach about $126 million, excluding reimbursable expenses and performance incentives.
Earlier this month, Maersk Line Ltd. won an up to $71.5 million, nearly five-year contract to charter an ice-strengthened tanker to support the command, and it won a $66 million contract to operate and maintain two command ships in April.