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SS Green Mountain State (T-ACS-9)


SS Green Mountain State (T-ACS-9)

SS Green Mountain State (T-ACS-9)
Career (United States)
Name: SS Green Mountain State (T-ACS-9)
Builder: Ingalls Shipbuilding Inc., Pascagoula, MS
Laid down: 2 December 1963
Launched: 20 August 1964
Acquired: 15 March 1992
Out of service: 28 July 2006
Status: National Defense Reserve Fleet - Logistical Support
Notes: Launched as SS Mormacaltair
General characteristics
Class & 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 General Electric turbines two boilers single propeller, 19,250shp
Speed: 17 kn (20 mph; 31 km/h)
Capacity: 300+ Cargo Containers

Full Operational Status: 89 civilian mariners

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

SS Green Mountain State (T-ACS-9) was laid down on 2 December 1963, as the breakbulk ship, SS Mormacaltair, a Maritime Administration type (C6-S-60a) hull, under Maritime Administration contract (MA 143) at Ingalls Shipbuilding Inc., Pascagoula, MS. She was launched, 20 August 1964 and delivered to the Moore-McCormack Lines, 26 March 1965. She was renamed SS American Altair, date unknown and reacquired by the Maritime Administration (MARAD) in 1987 at which time she was converted to a MARAD type hull (C6-S-MA60d) Crane Ship at National Steel and Shipbuilding Co., San Diego, CA. She was then assigned by the Maritime Administration to the Ready Reserve Force, (RRF), under operation control of Military Sealift Command (MSC) and placed in service as Green Mountain State (ACS-9), 15 March 1992. Green Mountain State was berthed at Bremerton, WA. and assigned to Maritime Prepositioning Ship Squadron Three where she was maintained in a five-day readiness status. She was removed from MSC control, withdrawn from the RRF by reassignment to the National Defense Reserve Fleet (Beaumont, TX) on 28 July 2006. She has since been reassigned to the Suisun Bay Reserve Fleet.

As she appears today, in Suisun Bay.


  • SS Green Mountain State (T-ACS-9)
  • This article includes information collected from the Naval Vessel Register, which, as a U.S. government publication, is in the public domain. The entry can be found here.

External links

  • National Defense Reserve Fleet Inventory
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