NRP Arpão

NRP Arpão (S161) is a Tridente-class attack submarine of the Portuguese Navy.[1] It was commissioned in 2010.

NRP Arpão in the Lisbon Naval Base
History
Portugal
NameNRP Arpão
BuilderHDW
Laid down2005
Commissioned22 December 2010
StatusIn active service
General characteristics
Displacement
  • 1,700 tons (surfaced)
  • 2,020 tons (submerged)
Length67.7 m (222 ft)
Beam6.35 m (21 ft)
Draught6.6 m (22 ft)
Propulsion
  • 2 generators AIP Siemens Sinavy (BZM-120); 240 KW
  • 2 diesel engines MTU 16V396 TB-94; 6,24 MW
  • 1 electric engine Siemens Permasyn; 2,85 MW
  • 1 axis
Speed
  • 20 knots (37 km/h) submerged
  • 10 knots (19 km/h) surfaced
  • 6 knots (11 km/h) AIP system
Range12,000 nautical miles (22,000 km) at 8 knots (15 km/h)
Endurance60 days
Test depthsuperior to 300 m (984 ft)
Capacity14 marines
Complement
  • 33 men:
  • 7 officers
  • 10 sergeants
  • 16 sailors
Sensors and
processing systems
Armament

Operational history

In April 2023, the submarine deployed to the South Atlantic, crossing the Equator for the first time.[2] During her deployment, she visited Cape Verde, Brazil, South Africa, Angola, and Morocco, reportedly making it the longest ever Portuguese submarine deployment.[3] In October 2023, the submarine was deployed to the Mediterranean to operate with NATO naval forces as part of "Operation Sea Guardian".[4]

References
  1. Raquel Ramalho Lopes (1 May 2011). "Segundo submarino chegou a Portugal". RTP Notícias (in Portuguese). RTP. Retrieved 19 July 2012.
  2. "Portuguese submarine crosses Equator for 1st time". The Portugal News. 26 April 2023. Retrieved 5 October 2023.
  3. Hutson, Terry (9 June 2023). "Indian and Portuguese naval vessels visit South Africa". Defence Web. Retrieved 5 October 2023.
  4. "NRP Arpao Joins NATO's Operation Sea Guardian". Sea Waves Magazine. 3 October 2023. Retrieved 5 October 2023.


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