is a dedicated Antarctica patrol ship that fulfils the nation's mandate to provide support to the British Antarctic Survey (BAS). is an ocean survey vessel and at 13,500 tonnes is one of the largest ships in the Navy. As of 2018, the newly commissioned also undertakes survey duties at sea. The Royal Fleet Auxiliary plans to introduce two new Multi-Role Ocean Surveillance Ships, in part to protect undersea cables and gas pipelines and partly to compensate for the withdrawal of all ocean-going survey vessels from Royal Navy service. The first of these vessels, RFA Proteus, entered service in October 2023.
is a dedicated Antarctica patrol ship that fulfils the nation's mandate to provide support to the British Antarctic Survey (BAS) is an ocean survey vessel and at 13500 tonnes is one of the largest ships in the Navy As of 2018, the newly commissioned also undertakes survey duties at sea. The Royal Fleet Auxiliary plans to introduce two new Multi-Role Ocean Surveillance Ships, in part to protect undersea cables and gas pipelines and partly to compensate for the withdrawal of all ocean-going survey vessels from Royal Navy service. The first of these vessels, RFA Proteus, entered service in October 2023.