This was purchased for the Museum from Davis, a London dealer, by Sir James Caird in 1948 with PAH9534. It was then believed to show the frigate 'Amethyst' in chase of the 'Thetis', 10 November 1808, but was reidentified before 1975 when it was shown in the NMM Pocock exhibition (no. 29) under the title above. Another version with small variations, and formerly in the collection of Sir Bruce Ingram, was acquired by the Ministry of Works in 1953. Signed and dated by the artist, lower left. Note that it is a watercolour, here only illustrated in black and white.