The Moidart was defensively armed when she was sunk on June 9th, 1918. The torpedo struck her after hold, starboard side, at 1.00am, and she sank within four minutes. The survivors were picked up around 6.30am that same morning by a patrol vessel.
The remains of the ship were positively identified in June 1975, and her gun was recovered by divers from a branch of the British Sub-Aqua Club in June 1978. They reported that the wreck was broken in two and lying in 33m of water, orientated NW/SE. Her bow was still intact and standing proud of the seabed, although the misdhip and stern areas had collapsed and were well-scattered.