On the evening of 4 March she took on board injured personnel of the landing party and discharged them the next day into Soudan and SS Braemar Castle.

During the hours of darkness between 6 and 11 March she took part in operations in the Dardanelles against mines, and was frequently in action against field artillery, forts and searchlights.

On 3 May she lay off Z beach and reported heavy gunfire on shore and large calibre enemy shells landing in the proximity of the British ships.

Amethyst's last part in the landings occurred on 18 May when she proceeded up the Gulf of Adramyt in the early hours, accompanied by destroyers, arriving at Asia Bay just after 05:00.

She sent an armed party away in boats to investigate the possibility of removing enemy lighters, but they returned 20 minutes later reporting that a sandbar prevented them from being moved.

[6] For much of the autumn of 1915, Amethyst stayed in port and acted a temporary depot ship for British submarines passing through on patrol.

On 9 January Möwe sank the collier Minieh, and when she failed to rendezvous with the rest of the squadron, a search was begun.

After a long stay in Rio de Janeiro, Amethyst sailed on 5 April 1918, patrolling down the coast inspecting vessels and arriving in Montevideo on 10 March.

On the way home, she met HMS Britannia off the coast of Sierra Leone and 295 cases of gold bullion (worth an estimated £1 million) were loaded on board.

Amethyst was recommissioned on 20 November 1918[12] and on the way to Gibraltar she stopped at Lisbon for the funeral of the late President of Portugal, Sidónio Pais on 21 December.