NAMAtlântico in 2021
History
United Kingdom
Name	HMSOcean
Operator	Royal Navy
Ordered	11 May 1993
Builder	Vickers Shipbuilding and Engineering Ltd,Kværner (Govan)
Laid down	30 May 1994
Launched	11 October 1995
Sponsored by	Queen Elizabeth II of the United Kingdom
Commissioned	30 September 1998
Decommissioned	27 March 2018[1]
Refit	Major 2012–2014
Home port	HMNB Devonport,Plymouth
Identification	IMO number: 9079456 MMSI number:234643000 Callsign: GCOU
Motto	Ex undis surgit victoria (From the waves rises victory)
Honours and awards	Al Faw 2003
Fate	Sold to Brazil[2]
Brazil
Name	NAMAtlântico
Acquired	Purchased on 19 February 2018, from theRoyal Navy
Commissioned	29 June 2018
Home port	Arsenal de Marinha do Rio de Janeiro
Identification	IMO number: 9079456 MMSI number:710509000 Callsign: PWTL Pennant number: A140
Motto	Nosso navio, nosso mar(Our ship, our sea)
Status	Active
Badge
General characteristics
Class & type	Amphibious Assault Ship
Displacement	21,500 t (21,200 long tons; 23,700 short tons)[3]
Length	203.4 m (667 ft)[4]
Beam	35 m (115 ft)[4]
Draught	6.5 m (21 ft)[4]
Propulsion	2xCrossleyPielstick PC2 Mk-6 MW 12 cylinder.
Speed	10 knots (12 mph; 19 km/h) cruise 18 knots (21 mph; 33 km/h) max[5][unreliable source?]
Range	8,000 miles (13,000 km)[6]
Boats & landing craft carried	1 Seaboat (Pacific 22 Mk2) 4 ×LCVP Mk5B
Capacity	40 vehicles[4]
Troops	830
Crew	285 + 180 aviation personnel
Sensors & processing systems	Type 997 Artisan radar Type 1008 Navigational Radar 2 × Type 1007 Aircraft Control Radar
Electronic warfare & decoys	UAT Electronic Support Measures DLH decoy Launchers Surface Ship Torpedo Defence (SSTD)
Armament	4 ×30mm DS30M Mk2 guns 4 ×Miniguns 8 ×General purpose machine guns
Aircraft carried	Up-to 18 helicopters: EC725 Caracal S-70B Seahawk AS350 Écureuil
Aviation facilities	Large flight deck Hangar deck Helicopter lifts Vehicle deck
Notes	To see troops carried, armament and aircraft carried while in service with theRoyal Navy SeeHMS Ocean

NAMAtlântico (A140) (previously PHMAtlântico (A140)) is anamphibioushelicopter carrier and currentflagship of theBrazilian Navy.^[7] Originally constructed in theUnited Kingdom for service with theRoyal Navy as alanding platform helicopter, she was commissioned on 30 September 1998 asHMS Ocean, serving until being decommissioned on 27 March 2018, and then commissioned into service with Brazil the following June.

In 2017, media outlets began reporting that Brazil was interested in purchasingOcean as a replacement for the aircraft carrierSão Paulo, which was withdrawn from service in 2017 following multiple mechanical failures. The Royal Navy released an asking price of £80.3 million ($105.8 million USD), which theBrazilian Navy called "convenient".^[8] In November 2017, theBrazilian Ministry of Defense began formal negotiations for the acquisition of the ship.^[9]

In December 2017, the Brazilian Navy confirmed the purchase of the ship for £84.6 million, equivalent to R$359.5M and USD $113.2M. Following her decommissioning from Royal Navy service in March 2018, she would undertake a period of maintenance in the United Kingdom and was expected to arrive in Rio de Janeiro by 25 August 2018,^[10] with the intention of being commissioned and fully operational by 2020.^[11][12][13] Brazilian defence officials confirmed the purchase,^[14][2][15] as well as officials from the UK MoD, as of 17 February 2018.^{[16][17][18][19]}

The Brazilian Navy commissioned the multi-purpose helicopter carrierAtlântico (A140) on 29 June in the United Kingdom. The helicopter carrier package for Brazil includes anArtisan 3D search radar, KH1007 surface surveillance radar system, four 30 mmDS30M Mk 2 remote weapon systems and four Mk 5B landing craft. However, the three original 20 mmMk 15 Block 1B Phalanx close-in weapon systems, the torpedo defence systems and 7.62 mmM134 machine guns were removed from the ship before the transfer to Brazil. The ship displaces 21,578 tonnes, is 203.43 m long and has a range of 8,000 n miles. The ship underwent maintenance work by Babcock and BAE Systems in February.^[20][21]

The ship was scheduled to reach her homeport,Arsenal de Marinha do Rio de Janeiro (AMRJ), on 25 August, whereAtlântico underwent operational sea training under the Royal Navy'sFlag Officer Sea Training.^[22][23][24]

On 12 November 2020,Atlântico was redesignated "NAM", for "multipurpose aircraft carrier" (Portuguese:Navio Aeródromo Multipropósito), from "PHM", for "multipurpose helicopter carrier" (Portuguese:Porta-Helicópteros Multipropósito), to reflect her capability to operate with fixed-wingmedium-altitude long-endurance unmanned aerial vehicles as well as crewedtiltrotorVTOL aircraft.^[7]

In 23 February 2023, the vessel was sent to the port ofSão Sebastião to provide afield hospital for rescue efforts during the2023 São Paulo floods and landslides. On board, the vessel carried 28 medics of several specialties including surgeons, dentists and orthopedists and 180marines who were designated to operate heavy machinery in aid of the search and rescue efforts.^[25]

• List of ships of the Brazilian Navy

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