Great Britain II (also United Friendly, Norsk Data GB, With Integrity, Whitbread Heritage) is a yacht launched by Princess Anne on 21 May 1973 named after the SS Great Britain, built by Isambard Kingdom Brunel which was the world's first "iron clad" steam ship and whose salvage from the Falklands was underwritten by Sir Jack Hayward, who also funded the building of GB II.