RFA Tidesurge is a Tide-class replenishment tanker of the British Royal Fleet Auxiliary. Built by DSME in 2017, she entered service with the RFA on 20 February 2019. From Wikipedia
HMS St Albans and HMS Mersey, supported by a Merlin helicopter and RFA Tidesurge, monitored Russian vessels Admiral Golovoko and Soobrazitelny in a high-readiness operation.