Ohio was one of 14 merchant vessels sent to aid Malta. The convoy, with naval and air escort, met enemy action on 11 August. The next day, when air attacks began, it became apparent the tanker was the main target. For four days the ship suffered continuous attacks from aircraft and submarines. She sustained grave damage from a torpedo, two sticks of bombs lifted her out of the water and another exploded in her boiler room. A
Stuka crashed and exploded on her deck, her back was broken and
Ohio was twice abandoned and reboarded. In spite of this she reached Malta on 15 August and was carried into
Valletta harbour, lashed between the destroyers
HMS Ledbury and
HMS Penn, and not until the last of the fuel had been pumped out did
Ohio settle on the bottom. During the action, Mason and the chief engineer were badly burned and flown back to England for treatment. He was also awarded the
Lloyd's War Medal for Bravery at Sea. ==Later career and retirement==