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| RFA Tidesurge (A138) | |
|---|---|
| Ship name | RFA Tidesurge (A138) |
| Ship namesake | Tidesurge |
| Operator | Royal Fleet Auxiliary |
| Builder | Daewoo Shipbuilding & Marine Engineering |
| Laid down | 2016 |
| Launched | 2017 |
| Commissioned | 2019 |
| Displacement | 39,000 tonnes (full load) |
| Length | 200.9 m |
| Beam | 28.5 m |
| Draught | 10.8 m |
| Propulsion | Combined diesel and diesel |
| Speed | 20 knots |
| Range | 10,000 nmi |
| Complement | Royal Fleet Auxiliary civilians and Royal Navy personnel |
| Note | Tide-class replenishment tanker |
RFA Tidesurge (A138) is a Tide-class replenishment tanker of the Royal Fleet Auxiliary, built to provide underway replenishment to Royal Navy task groups and support global logistics for British maritime operations. Commissioned in the late 2010s, she forms part of the Tide-class tanker programme designed to replace older fleet auxiliaries and sustain Carrier Strike Group and amphibious deployments worldwide. Tidesurge operates alongside other auxiliaries to enable prolonged deployments involving HMS Queen Elizabeth (R08), HMS Prince of Wales (R09), and allied task forces.
Tidesurge was designed under requirements set by the Ministry of Defence (United Kingdom) to meet modern maritime logistics and replenishment-at-sea needs for United Kingdom expeditionary operations, integrating automated cargo handling, multi-product fuel storage and helicopter facilities similar to contemporaries like the Wave-class tanker and the Fort Victoria-class replenishment ship. Her hull and superstructure reflect construction techniques from Daewoo Shipbuilding & Marine Engineering and naval architecture trends influenced by RO-RO and replenishment designs used by the United States Navy and Royal Australian Navy. Tidesurge displaces approximately 39,000 tonnes full load, measures about 200.9 metres in length with a beam of 28.5 metres, and is powered by combined diesel engines enabling speeds around 20 knots and a range exceeding 10,000 nautical miles comparable to auxiliary replenishment standards of the North Atlantic Treaty Organization. Armament and defensive fit include provisions for close-in weapon systems and small-calibre mounts in line with Defence Equipment and Support guidelines, while aviation facilities support operations by helicopters such as the AgustaWestland Merlin and RAF Chinook in cross-deck operations.
Ordered as part of a contract awarded in the 2010s, Tidesurge was constructed at the Okpo shipyard of Daewoo, a yard with previous work for Royal Navy auxiliares, following hull blocks and modular assembly methods used in modern shipbuilding comparable to projects at Babcock International and Fincantieri. Her keel was laid down in 2016 and she was launched in 2017 during a period of increased amphibious and carrier capability investment by the United Kingdom Ministry of Defence. Sea trials were conducted in the waters off South Korea and the Yellow Sea with oversight from MOD representatives and classification societies similar to Lloyd's Register, before delivery and acceptance trials with crews drawn from the Royal Fleet Auxiliary and Royal Navy personnel. She arrived in the United Kingdom for fitting out and formal commissioning into service in 2019, joining sister ships RFA Tiderace (A137), RFA Tideforce (A138?) and contributing to the Fleet Solid Support and replenishment architecture supporting Carrier Strike Group 21 and later operations.
Since commissioning, Tidesurge has executed routine replenishment-at-sea evolutions with HMS Queen Elizabeth (R08), supported NATO exercises such as Joint Warrior and Steadfast Defender, and integrated into international logistics networks alongside auxiliaries from the United States Navy, Royal Canadian Navy, and Royal Netherlands Navy. Tidesurge participated in long-range deployments to the Indo-Pacific and the Mediterranean Sea, underpinning operations connected to geopolitical events involving Falklands logistics planning, freedom of navigation initiatives near the South China Sea, and multinational task groups responding to crises near Gulf of Aden and Red Sea transit lanes. The ship's crewing model combined civilian mariners from the Royal Fleet Auxiliary with embarked Royal Navy personnel during task group operations, mirroring practices seen on RFA Fort Victoria and older Tide-class predecessors.
Tidesurge has been employed on a variety of missions including tactical replenishment for carrier strike deployments, humanitarian assistance during regionally focused relief efforts similar to operations undertaken by HMS Albion (L14) and RFA Mounts Bay (L3008), and logistics support for exercises with partners such as United States Navy Carrier Strike Groups, the French Navy, and Royal Canadian Navy formations. Notable deployments include extended transits to the Asia-Pacific region to support British presence operations, participation in NATO maritime exercises in the North Atlantic, and tasking to sustain anti-piracy and maritime security patrols in cooperation with Combined Task Force 151 and multinational escorts.
During in-service periods, Tidesurge received incremental upgrades consistent with Fleet Auxiliary maintenance cycles, including enhancements to replenishment-at-sea rigs, cargo handling systems influenced by commercial ROV and automated logistics trends, and communications suites compatible with Link 22 and allied tactical data links to operate with Carrier Strike Group battle networks. Habitability and engineering modifications followed lessons learned from contemporaries such as RFA Tiderace (A137), while survivability fittings allowed for the installation of modular defensive systems in line with directives from Defence Equipment and Support and interoperability standards promoted by NATO.
Tidesurge's service record includes routine technical faults and minor incidents typical for large auxiliaries, such as replenishment gear malfunctions and propulsion system maintenance requiring port repairs at yards like Portsmouth Naval Base and international repair facilities in Gibraltar or Freetown. No major collisions or losses have been publicly recorded, though standard safety investigations by bodies akin to the Marine Accident Investigation Branch and MOD-led boards have led to procedural updates to replenishment procedures and bridge team management in coordination with Royal Navy training establishments.
Category:Tankers of the United Kingdom Category:Royal Fleet Auxiliary ships