 He joined the armoured cruiser HMS "Undaunted" in the Mediterranean Fleet in 1890, the battleship HMS "Empress of India" in the Channel Squadron in 1892 and the cruiser HMS "Astraea" in the Mediterranean Fleet in 1895.Wemyss joined the Royal Yacht HMY "Victoria and Albert" in 1896.Promoted to commander on 31 August 1898, he transferred to the cruiser HMS "Niobe" on the Cape of Good Hope Station, which served as a troopship for prisoners of war during the Second Boer War.