RFA Proteus
ship built in 2019
RFA Proteus is a ship of the Royal Fleet Auxiliary within His Majesty's Naval Service of the United Kingdom. Its role is surveillance, acting as a platform for Remotely Operated Underwater Vehicles (ROUVs) and as a testbed for new specialist capabilities, required for monitoring waters important to UK interests. Acquired in 2023, the ship entered drydock at Cammell Laird for modification into a Multi-Role Ocean Surveillance Ship (MROSS). She formally entered service in October 2023.
The ship was formerly named MV Topaz Tangaroa in 2017–2022, and was used as a platform supply vessel operated by P&O Maritime Logistics. The vessel was refitted after being sold to the U.K. Ministry of Defence in January 2023.
Proteus is one of two new commercial vessels acquired for the Royal Fleet Auxiliary in 2023, the other being HMS Stirling Castle (M01); a mine hunting support ship to act as a mothership for autonomous minehunters.
History
MV Topaz Tangaroa
The ship operated as the offshore support vessel MV Topaz Tangaroa for Topaz Marine (later, P&O Maritime Logistics) from December 2019 until January 2023. Designed and built by Vard Brattvaag, Norway and with the hull construction completed in Tulcea shipyard, Romania the primary capabilities of Topaz Tangaroa were to support subsea construction and installation projects, subsea inspection and survey, and as a mother ship to support remotely operated vehicle (ROV) operations. The ship was flagged in the Marshall Islands with its home port as Majuro.
The public source identifies “RFA Proteus” as ship built in 2019. This brief keeps that definition visible, then builds a research path around Proteus, ship and built.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jun 12, 2026. The linked authority identifier is Q101928876. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2023, 2017, 2022 and 2019.
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This entry incorporates text from “RFA Proteus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.