The Tide-class tanker (formerly the Military Afloat Reach and Sustainability (MARS) project) is a class of four fast fleet tankers that entered service with the British Royal Fleet Auxiliary from 2017. The 37,000 t ships provide fuel, food, fresh water, ammunition and other supplies to Royal Navy vessels around the world.
Norway ordered a similar 26,000 t version with a 48- bed hospital and greater solid stores capacity, but reduced liquid capacity. It was delivered in November 2018, as HNoMS Maud, two years after originally planned. The two classes are very similar, but are not directly comparable due to large variance in capabilities delivered.