Endeavour flew a red ensign during her service in the Royal Navy, as far as I can determine. The White ensign only became the ensign of the entire Royal Navy i

Endeavour flew a red ensign during her service in the Royal Navy, as far as I can determine. The White ensign only became the ensign of the entire Royal Navy in 1864, prior to that it was flown by ships of the White squadron of the Royal Navy. The Red ensign was flown by ships of the Red squadron, as well as by private vessels belonging to British subjects. https://en.wikipedia.org/wiki/British_ensign#History https://en.wikipedia.org/wiki/British_ensign#History