.JPG) NRPAlmirante Gago Coutinho at Pipas port, Azores. | |
| History | |
|---|---|
 United States | |
| Name | USNSAssurance |
| 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 | NRPAlmirante Gago Coutinho |
| Namesake | Gago Coutinho |
| Acquired | September 1999 |
| Commissioned | 1999 |
| In service | 1999 |
| Identification |
|
| Status | In service |
| General characteristics | |
| Class & type | Stalwart-classocean surveillance ship |
| Displacement |
|
| Length | 224 ft (68 m) |
| Beam | 43 ft (13 m) |
| Draft | 15 ft (4.6 m) |
| Complement | 20 |
NRPAlmirante Gago Coutinho (A523) is a ship of thePortuguese Navy'Dom Carlos I-class survey vessels (ex-USStalwart-classocean surveillance ship adapted inPortugal for the execution ofhydrography andoceanography surveys). Before transfer to the Portuguese Navy,Almirante Gago Coutinho was formerlyUSNSAssurance (T-AGOS-5) of theUnited States Navy.
TheStalwart-classocean surveillance ships were succeeded by the longerVictorious class.Assurance had anoverall length of 224 feet (68 m) and a length of 203 feet 6 inches (62.03 m) at itswaterline. It had abeam of 43 feet (13 m) and adraft of 15 feet (4.6 m). The surveillance ship had adisplacement 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 twoGeneral 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 twoshafts. It had agross register tonnage of 1,584 tons and adeadweight tonnage of 786 tons.[1]
TheStalwart-class ocean surveillance ships had maximum speeds of 11 knots (20 km/h; 13 mph). They were built to be fitted with theSurveillance 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). Itscomplement was between thirty-two and forty-seven. Its hull design was similar to that of thePowhatan-classtugboats.[1]
USNSAssurance was aStalwart-class modified tactical auxiliary general ocean surveillance ship of the United States Navy.Stalwart-class ships were originally designed to collect underwateracoustical data in support ofCold Waranti-submarine warfare operations in the 1980s.
In 1999, ex-USNSAssurance was transferred to Portugal and is now NRPAlmirante Gago Coutinho survey ship.[2]
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