Lieutenant Paterson reported what he had discovered, and ordered all salvage operations to be suspended until these mines had been made safe. That this had been a deliberately planned trap on the part of the Hun is indicated by the following incident. Lieutenant Paterson was told that one of the prisoners taken from the U.C. 5, who was at that time confined in the _Pandora_ depot ship, had asked if he could see a British officer, as he had a statement to make. So Paterson went to see him. The man then said that he had been very well treated by his captors, and that in recognition of this he wished to warn the English against making any attempt to salve the submarine, as a trap had been laid to blow up those who should undertake this task. Lieutenant Paterson now proceeded to deal with the mines in the submarine; he had with him an expert and daring naval diver--the former was awarded a D.S.C. and the latter a Conspicuous Gallantry Medal and a gratuity, in recognition of their services on this occasion. It was highly risky work, calling for much dexterity and ingenuity. It was found that the two projecting mines could not be drawn back into the tubes, so they were secured where they were with wire in such a way that they could not fall out; though, of course, there still remained the possibility of their being exploded by the ship's bumping on the sand. The upper mines were then rendered innocuous by the removal of the acid tubes from the horns and other precautions, but it was impossible to do this with the lower mines, so they remained active. Then the salvage work commenced--a heavy business now, for the U.C. 5 was daily sinking deeper into the quicksands of the Shipwash. The naval salvage plant at Harwich proved too light to move her. At last she was lashed to a lighter with 6-1/2-inch wire, which was passed round her in four parts. As the tide rose the lighter lifted the wreck a little way, and then the wires broke, and back the submarine fell to the sea-bottom, at imminent risk of exploding the two projecting mines. Finally, Commodore Young, R.N.R., the salvage expert under whom the Admiralty Salvage Department has been placed, succeeded, with his heavy salvage plant, in raising her. He employed 9-inch wire and a large lighter capable of lifting 500 tons. The wreck was secured to the lighter's side at low water. The lighter's near tanks were then emptied, and her outer tanks were filled with water, which thus acted as a counterweight. This time the U.C. 5 was raised and got off safely. She was towed into Harwich harbour and placed in the floating dock--a delicate operation, as the measurements were close, the dock being only just large enough to receive her, and the two live mines were still projecting from her. But happily no accident occurred. All the mines were removed. She was patched up and sent to the Thames, where, it will be remembered, she was exhibited to the public and aroused much interest.