Between 1782 and 20 June 1783, "Sphinx" was an engaged in Suffren's five battles in the Bay of Bengal and off Sri Lanka - the battles of Sadras (17 February 1782), Providien (12 April 1782), Negapatam (6 July 1782), Trincomalee (August and September 1782) and Cuddalore (20 June 1783).