She went aground en route to scuttling in the Rottnest graveyard on Friday 10 Feb 1939 when the towing hawser got caught around the launch Myrtle’s propeller in the surge from the heavy swell. The barge was cut away, and drifted ashore at Henrietta Rocks, while a passing launch towed the Myrtle into Thompson’s Bay. As SHARK was being scuttled anyway, there was no real pressure to recover her, and indeed nothing further was done.