King George first appeared in Lloyd's Register (LR) in 1783 with O'Brian, master, Neave & Co., owners, and trade London–Antigua.

[4]King George, Kemp, master, returned on 29 October 1819 with 250 casks of whale oil, fins, and two seal skins.

[2] 3rd whaling voyage (1820–1821): Captain Thomas Duell (or Dewell), sailed from London on 8 February 1820, bound for the coast of Africa.

[7] 5th whaling voyage (1823–Loss): King George, Bryan, master, arrived at the Cape of Good Hope on 1 February 1823 from Tristan da Cunha.

[9] On 17 July the whaler King George, Captain Charles Bryant, from England, via the Cape, in ballast, put into Storm Bay Passage (Derwent River (Tasmania)), to join Thalia, for the whaling season.