HMS Irresistible listing from mine damage on 18 March 1915. Her boats are gone so this is presumably after the majority of her crew was evacuated by destroyer HMS Wear to HMS Queen Elizabeth and others among the bombardment force. However, there appears to be men climbing down from the foremast, and what looks to be another small group to port next to inward-facing boat davits. This photo is listed as having been taken from HMS Lord Nelson, but I suspect it could be from HMS Ocean's rescue attempt, or even a high spot on HMS Wear.
Note her aft turret has been partially uprooted, and the smoke emitting from her quarterdeck. The mine had heavily damaged the engineering spaces aboard Irresistible, with collapsed bulkheads leaving her flooding and without fighting ability. Ottoman batteries along the shore continued to pound the ship as she drifted. When the destroyer HMS Jed was sent to sink her wreck under the cover of darkness, both she and the adrift hulk of HMS Ocean had already sunk. Irresistible's complement had lost 150 during the day's events. Her wreck today lies upside down in about 180' of water. A flag of hers, somehow salvaged by the Turks shortly after her loss, is on display in Istanbul. As previously mentioned in my post on HMS Goliath, the minelayer Nusret, responsible for the minefield, is a museum ship in Turkey as well.