NRP Almirante Gago Coutinho (A523)

NRP Almirante Gago Coutinho (A523) is a ship of the Portuguese Navy' Dom Carlos I-class survey vessels (ex-US Stalwart-class ocean surveillance ship adapted in Portugal for the execution of hydrography and oceanography surveys). Before transfer to the Portuguese Navy, Almirante Gago Coutinho was formerly USNS Assurance (T-AGOS-5) of the United States Navy.

For other ships with the same name, see USS Assurance.
NRP Almirante Gago Coutinho at Pipas port, Azores.
History
United States
Name: USNS Assurance
In service: 1 May 1985
Out of service: 6 January 1995
Stricken: 6 January 1995
Identification: T-AGOS-5
Fate: Transferred to Portugal 1999
Portugal
Name: NRP Almirante Gago Coutinho
Namesake: Gago Coutinho
Acquired: September 1999
Commissioned: 1999
In service: 1999
Identification:
Status: In service
General characteristics
Class and type: Stalwart-class ocean surveillance ship
Displacement:
  • 1,565 tons (light)
  • 2,535 tons (full)
Length: 224 ft (68 m)
Beam: 43 ft (13 m)
Draft: 15 ft (4.6 m)
Complement: 20

Design

The Stalwart-class ocean surveillance ships were succeeded by the longer Victorious class. Assurance had an overall length of 224 feet (68 m) and a length of 203 feet 6 inches (62.03 m) at its waterline. It had a beam of 43 feet (13 m) and a draft of 15 feet (4.6 m). The surveillance ship had a displacement of 1,600 tonnes (1,600 long tons; 1,800 short tons) at light load and 2,301 tonnes (2,265 long tons; 2,536 short tons) at full load. It was powered by a diesel-electric system of four Caterpillar D-398 diesel-powered generators and two General Electric 550 metric horsepower (540 shp; 400 kW) electric motors. This produced a total of 3,200 metric horsepower (3,200 shp; 2,400 kW) that drove two shafts. It had a gross register tonnage of 1,584 tons and a deadweight tonnage of 786 tons.[1]

The Stalwart-class ocean surveillance ships had maximum speeds of 11 knots (20 km/h; 13 mph). They were built to be fitted with the Surveillance Towed Array Sensor System (SURTASS) system. The ship had an endurance of thirty days. It had a range of 3,000 miles (2,600 nmi; 4,800 km) and a speed of 11 knots (20 km/h; 13 mph). Its complement was between thirty-two and forty-seven. Its hull design was similar to that of the Powhatan-class fleet ocean tugs.[1]

History

USNS Assurance was a Stalwart-class modified tactical auxiliary general ocean surveillance ship of the United States Navy. Stalwart-class ships were originally designed to collect underwater acoustical data in support of Cold War anti-submarine warfare operations in the 1980s.

In 1999, ex-USNS Assurance was transferred to Portugal and is now NRP Almirante Gago Coutinho survey ship.[2]

gollark: It's obviously possible to stabilise helicopters because people can control helicopters.
gollark: Also, you could plausibly have a way to communicate telemetry and stuff to knowledgeable ground control people.
gollark: How common are ridiculously unplanned failure modes? And how much do the humans actually get them right?
gollark: There is the problem that your thing might rely too much on simulation quirks.
gollark: If you can simulate the plane down to parts-level, which is admittedly probably quite hard (but computers inevitably get faster), you can just randomly generate failure cases.

References
  1. Norman Polmar (2005). The Naval Institute Guide to the Ships and Aircraft of the U.S. Fleet. Naval Institute Press. p. 617. ISBN 978-1-59114-685-8.
  2. World Navies Today: Portugal



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