The Wave-class tankers are a class of fast fleet tankers in service with the

Royal Fleet Auxiliary The Royal Fleet Auxiliary (RFA) is a naval auxiliary fleet owned by the UK's Ministry of Defence. It provides logistical and operational support to the Royal Navy and Royal Marines. The RFA ensures the Royal Navy is supplied and supported b ...

. The class is tasked with providing fuel, food, fresh water, ammunition and other supplies to

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early medieval period, the first major maritime engagements were foug ...

vessels around the world. There are two ships in the class, and . The ships were ordered to replace the aging s and . The two vessels have seen service in a number of locations, including anti-drug and hurricane relief operations in the

Caribbean Sea The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico ...

, anti-piracy activities around the

Horn of Africa The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...

, and deterrent patrols in the

South Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe an ...

. As of early 2022, both ships were earmarked for "extended readiness" status (i.e. uncrewed reserve).

History

A contract was placed for the vessels in 1997 with

Vickers Shipbuilding and Engineering Ltd Vickers Shipbuilding and Engineering, Ltd (VSEL) was a shipbuilding company based at Barrow-in-Furness, Cumbria in northwest England that built warships, civilian ships, submarines and armaments. The company was historically the Naval Construct ...

(Marconi Marine VSEL). Construction of ''Wave Knight'' began in 1998 at VSEL's

Barrow-in-Furness Barrow-in-Furness is a port town in Cumbria, England. Historically in Lancashire, it was incorporated as a municipal borough in 1867 and merged with Dalton-in-Furness Urban District in 1974 to form the Borough of Barrow-in-Furness. In 202 ...

yard and the ship was launched in 2000. With the acquisition of

Marconi Electronic Systems Marconi Electronic Systems (MES), or GEC-Marconi as it was until 1998, was the defence arm of General Electric Company (GEC). It was demerged from GEC and bought by British Aerospace (BAe) on 30 November 1999 to form BAE Systems. GEC then ren ...

and its Marconi Marine subsidiary in 1999

British Aerospace British Aerospace plc (BAe) was a British aircraft, munitions and defence-systems manufacturer. Its head office was at Warwick House in the Farnborough Aerospace Centre in Farnborough, Hampshire. Formed in 1977, in 1999 it purchased Marconi ...

became BAE Systems. BAE now owns VSEL in Barrow and the

Yarrow ''Achillea millefolium'', commonly known as yarrow () or common yarrow, is a flowering plant in the family Asteraceae. Other common names include old man's pepper, devil's nettle, sanguinary, milfoil, soldier's woundwort, and thousand seal. The ...

and

Govan Govan ( ; Cumbric?: ''Gwovan'?''; Scots: ''Gouan''; Scottish Gaelic: ''Baile a' Ghobhainn'') is a district, parish, and former burgh now part of south-west City of Glasgow, Scotland. It is situated west of Glasgow city centre, on the south b ...

shipyards on the

Clyde Clyde may refer to: People * Clyde (given name) * Clyde (surname) Places For townships see also Clyde Township Australia * Clyde, New South Wales * Clyde, Victoria * Clyde River, New South Wales Canada * Clyde, Alberta * Clyde, Ontario, a to ...

. BAE transferred the construction of ''Wave Ruler'' to Govan in 2000 and the vessel was launched in 2001. Both vessels were commissioned in 2003.

Design

The ships have the capability to supply fuel and other liquid cargo to vessels using replenishment rigs on port and starboard beams and through a Hudson reel-type stern rig. When providing support for amphibious operations, the ships are also able to deliver fuel to dracones positioned alongside. The equipment load includes cranes (for stores handling and abeam replenishment), steering and rudder gear, thyristor-controlled winch/windlasses and double drum mooring winches. Up to of liquids and of general solids can be carried. In addition,

reverse-osmosis Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to separate ions, unwanted molecules and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pr ...

equipment is fitted enabling the production of of drinkable water per day. The vessels were designed with

double hull A double hull is a ship hull design and construction method where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some dist ...

s to prevent or reduce environmental pollution from oil spills if damage is sustained to the outer hull. The ships can operate a Merlin HM1 helicopter, or other helicopters of similar size, from a hangar and flight deck at the stern. On deployments to Atlantic Patrol Task (N) they have typically embarked a Royal Navy

Lynx A lynx is a type of wild cat. Lynx may also refer to: Astronomy * Lynx (constellation) * Lynx (Chinese astronomy) * Lynx X-ray Observatory, a NASA-funded mission concept for a next-generation X-ray space observatory Places Canada * Lynx, Ontar ...

or a

United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...

helicopter. The vessels have a standard crew of 80 Royal Fleet Auxiliary personnel with provision for a further 22 Royal Navy personnel to conduct helicopter and weapons systems operations. They carry a full medical team and sick bay and are capable of distributing 2,000 emergency relief packages in times of crisis.

Construction programme

Future

In June 2018 it was reported by the Brazilian press that the

UK MoD The Ministry of Defence (MOD or MoD) is the department responsible for implementing the defence policy set by His Majesty's Government, and is the headquarters of the British Armed Forces. The MOD states that its principal objectives are to ...

had offered to sell one or both of the Wave-class tankers to

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. As early as 2010, BAE Systems had proposed providing Brazil with a variant of the Wave-class, tailored to meet the specific aviation, stores and personnel requirements of the

Brazilian Navy ) , colors= Blue and white , colors_label= Colors , march= " Cisne Branco" ( en, "White Swan") (same name as training ship '' Cisne Branco'' , mascot= , equipment= 1 multipurpose aircraft carrier7 submarines6 frigates2 corvettes4 amphibious ...

. As of June 2020, ''Wave Ruler'' was reported to be in reduced readiness but maintained in good condition and available for reactivation. In February 2022, it was reported that both tankers would be placed in "extended readiness" (uncrewed reserve).

Gallery

File:RFA Wave Knight (A-389).jpg, ''Wave Knight'' prepares to transfer fuel to the amphibious assault ship during a replenishment at sea. File:RFA Wave Ruler (A390).jpg, ''Wave Ruler'' underway with a

Eurocopter HH-65 Dolphin The Eurocopter MH-65 Dolphin is a twin-engined helicopter operated by the United States Coast Guard (USCG) for medevac-capable search and rescue (SAR) and armed Airborne Use of Force missions. It is a variant of the French-built Eurocopter AS ...

helicopter embarked File:Wave Ruler refuels Robert G Bradley.jpg, ''Wave Ruler'' (background) refuels in the Pacific Ocean. File:US Navy 070409-N-5459S-082 From right to left, RFA Wave Ruler (A390), USS Mahan (DDG 72), CS Almirante Latorre (FFG 14), FGS Sachsen (F 219), and USS Samuel B. Roberts (FFG 58) navigate together in formation during an exercise.jpg, ''Wave Ruler'' (foreground), , ''Almirante Latorre'', ''Sachsen'', and navigate in formation. File:RAF Wave Knight replenishing French frigate Germinal.jpg, ''Wave Knight'' resupplying French frigate ''Germinal''.

References

External links

Video of RFA ''Wave Ruler'' (A390) near Plymouth on 9 October 2009.
{{Royal Fleet Auxiliary ships Auxiliary replenishment ship classes Wave Knight Auxiliary ships of the United Kingdom