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SS Gem State (T-ACS-2)

Gem State. Alameda. (25497572357).jpg
SS Gem State (T-ACS-2)
United States
Name: SS Gem State (T-ACS-2)
Builder: National Steel and Shipbuilding, San Diego, CA
Laid down: 10 February 1965
Launched: 30 May 1965
Acquired: 7 May 1984
Homeport: Alameda, CA
Status: In ready reserve since 1984. Five days needed to activate.
Notes: Launched as SS President Monroe
General characteristics
Class and type: Keystone State-class crane ship
Displacement: 31,500 tons
Length: 668 ft 5 in (203.73 m)
Beam: 76 ft 1 in (23.19 m)
Draft: 33 ft 6 in (10.21 m)
Propulsion: two boilers, two steam turbines, single propeller, 17,500shp
Speed: 17 kn (20 mph; 31 km/h)
Capacity: 300+ Cargo Containers

Full Operational Status: 37 civilian mariners

Reduced Operational Status: 10 civilian mariners
Armament: None
Aviation facilities: None

SS Gem State (T-ACS-2) is a crane ship in Ready Reserve for the United States Navy. The ship was named for the state of Idaho, which is also known as the Gem State.


Gem State was laid down on 30 May 1965, as the a combination breakbulk-container ship, SS President Monroe, ON 501712, IMO 6520911, a Maritime Administration type (C6-S-1qa) hull, under MARAD contract (MA 165). Built by National Steel and Shipbuilding Company, San Diego, CA, hull no. 340, she was launched on 10 February 1965 and delivered to MARAD on 25 April 1966, for service with American President Lines. She was converted to a MARAD type (C6-S-1qc) container ship, in 1973, and continued to be operated by APL until delivered to the Maritime Administration in 1982 for lay up in the National Defense Reserve Fleet (NDRF). In 1984–1985 she was converted to a type (C6-S-MA1qd) Crane Ship by Continental Marine, San Francisco, CA. She was placed in service as SS Gem State (ACS-2) 7 May 1984, assigned to the Military Sealift Command (MSC) Ready Reserve Force, (RRF).[1] Gem State is one of 10 Crane Ships in the Surge Force and is berthed at Alameda, CA, assigned to Maritime Prepositioning Ship Squadron Three and is maintained in a five-day readiness status (ROS 5).



  1. ^ Polmar 2005 p. 308


  • Polmar, Norman (2005). The Naval Institute Guide to the Ships and Aircraft of the U.S. Fleet. Naval Institute Press. ISBN 1591146852.


External links