 On 15 March she suffered a boiler explosion that killed 15 of her crew.Despite this damage, "Dartmouth" continued operations, and on 18 March "Dartmouth" patrolled off the West coast of the Gallipoli peninsula while a final attempt was made by the battleships of the fleet to force the straits during daylight.The attack was a failure, with three battleships sunk by mines, and several more ships heavily damages by mines or by Turkish gunfire.