USS Kentucky (SSVN 737) undergoes hull welding at...
Audin Bescagil, a contractor for General Dynamics Electric Boat, performs welding on the hull of Ohio-class ballistic missile submarine USS...
Trident Refit Facility Bangor (TRFB) was established on July 1, 1981 as the primary maintenance facility for the West Coast Ballistic Missile Submarine (SSBN) fleet.
TRFB utilizes the Delta Pier (so named because its triangular configuration resembles the Greek letter Delta), to refit submarines. The Delta Pier was built by Naval Submarine Base Bangor in support of Trident submarines. The unique design of the Delta Pier was constructed parallel to the shoreline and has one of the largest dry docks built by the Navy.
TRFB maintains a single focus to support the nation’s strategic deterrence mission by repairing, incrementally overhauling, and modernizing SSBN submarines during refits for the Ohio-class and the future Columbia-class until the end of service life.
