Antarctic Patrol Ship (AGOB) that assists in scientific research programmes in co-operation with the British Antarctic Survey. Leased in 1991 as the Polar Circle and bought outright in 1992.
Ice-strengthened hull capable of breaking 1 m thick ice at 3 kt.
Former names
Polar Circle; A 176
Official number
A171
Built (yard and date)
Ulstein Hatlo, Norway; commissioned 21 Nov 1991