In 1908 the Mersey was sold to the White Star Line for use as a training ship for 60 cadets, making six voyages to Australia as a White Star training ship, traveling around the Cape of Good Hope outbound and Cape Horn inbound. In 1910 she became the first sailing ship to be equipped with a radio. She was also the first sailing ship aboard which an operation for appendicitis was performed on a cadet. In 1915 the White Star Line gave up their training scheme due to the war and sold the Mersey to Norwegian owners. She changed hands a number of times and her name was changed to Transatlantic then to Dvergso. She was scrapped in 1923.