Built in 1962 by J&J White of Cowes, Isle of White, RNLI TGB is a 47ft twin screw motor lifeboat built to carry up to 95 people. Despite being strong vessels, Watson-class boats like TGB were not designed to self-right when capsized, and this ultimately led to her involvement in one of the worst tragedies in the history of the lifeboat service.

Serving the treacherous waters of the Pentland Firth, TGB was stationed at Longhope in the Orkneys and was launched 34 times, rescuing 24 people. However on 17th March 1969, TGB was called to assist a Liberian freighter which had found herself in trouble on the east side of Orkney. Before TGBreached her, the crew of the freighter had already run aground and the crew disembarked for dry land, and contact with TGB was lost in the storm.

At first daylight the next day aircraft began the search for RNLI TGB which was located that afternoon. Overturned by 100ft high waves she had been unable to right herself and all eight crewmembers had been lost, three from one family.

RNLI TGB was salvaged and refurbished and continued to save lives in Ireland, before retiring from service in 1979, and was loaned to the Scottish Maritime Museum in the late 1980s.