Vigor Marine is awarded a contract for a 56-calendar day shipyard availability for the regular overhaul and dry docking of U.S. Navy Henry J. Kaiser-class underway replenishment oiler, USNS Rappahannock (T-AO 204).
The firm-fixed-price contract, worth around $11.7 million, was awarded by the vessel’s operator, the U.S. Navy Military Sealift Command (MSC).
The overhaul work includes general services, structural steel repairs, repair oil leaks in both port and starboard main engines, replace ballast tank level indicators, repairs to the emergency diesel generator, tank repairs and preservation to the marine sanitation device and vacuum collection holding and transfer tanks, renew valves for the ballast system, repairs to the main seawater piping, overhaul number one main seawater cooling, pump, overhaul number three ships service diesel generator turbocharger, repairs to staterooms, ship dry-docking and undocking, preservation to the ship’s underwater hull and freeboard, refurbish the hauling winch assembly and motors on station number three, refurbishment of the rollers on the sliding block/transfer head/guide and refurbishment to the kingpost for station three.
Work will be performed in Portland, Oregon, and is expected to begin on Jan. 7, 2019 and is expected to be completed by March 3, 2019.
The contract includes options which, if exercised, would bring the total contract value to around $13.5 million.
USNS Rappahannock (T-AO-204) is the eighteenth and final Henry J. Kaiser-class underway replenishment oiler built for the U.S. Navy Military Sealift Command (MSC). She is the second U.S. Navy ship named for the Rappahannock River in Virginia.
Rappahannock was laid down at Avondale Shipyard, Inc., at New Orleans, Louisiana, on 29 March 1992 and launched on 14 January 1995. She entered non-commissioned U.S. Navy service under the control of MSC with a primarily civilian crew on 7 November 1995.
The vessel was one of only three of the eighteen Henry J. Kaiser-class ships — the other two being USNS Patuxent (T-AO-201) and USNS Laramie (T-AO-203) — to be built with a double bottom in order to meet the requirements of the Oil Pollution Act of 1990. Hull separation is 6 feet (1.8 m) at the sides and 6 feet 6 inches (1.98 m) on the bottom, reducing her liquid cargo capacity by about 21,000 barrels (3,300 m3) from that of the 15 ships of her class without a double bottom (12% reduction).