In those troublous days the fact of the life-boats being hoisted out in readiness for eventualities conveyed little or nothing, but when a careful search proved that many of the life-belts had gone with the crew the problem became an interesting one. Had they been taken on to the deck of a German submarine which had subsequently dived and left them to drown, as was the case with the crew of a British fishing vessel, or had they been conveyed as prisoners of war to Germany? Against both of these surmises was the fact that _all_ the ship's boats remained, and a German submarine would scarcely be likely to come close alongside even a neutral ship, especially during the bad weather that had prevailed for the past few days. Would it remain one of the many mysteries of the great sea war? Some few hours later the trawler, with her big "prize"--under her own steam--entered an eastern naval base and berthed her capture with the aid of tugs. * * * * * The explanation came from headquarters several weeks later. The s.s. ----, of Barcelona, had grounded on the Goodwins about three hours before she nearly ran down the trawler. Her crew, thinking that she would rapidly break up in the surf, had fired distress signals and been taken safely ashore in a life-boat. The rising tide and south-westerly wind had done the rest, freeing her from the dangerous sands. CHAPTER XXV FROM OUT THE CLOUDS AND UNDER-SEAS IT has already been shown that the science of aerial warfare is closely allied with that of under-sea fighting. Airships and seaplanes play important parts in all anti-submarine operations. They make very efficient patrols and can detect the presence of both submarines and mines under the surface. During the Great War there were stations for armed aircraft all round the British coast, and the patrols of the sea and air acted in close co-operation. It often happened that one was able to render important service to the other. An occasion such as this took place off an east coast base in November, 1916. SALVING AN AIRSHIP A big car dashed up the wooden pier of a small seaport regardless of the violent jolting from the uneven planking. It was pulled up with a jerk when level with one of the little grey patrol boats known by the generic name of M.L.'s, which was lying in the calm water alongside with its air compressor pumping vigorously. Two officers of the Royal Naval Air Service, with a P.O., carrying a powerful Morse signalling lamp, jumped from the car and scrambled down the wooden piles on to the deck of the M.L. A nod from the commanding officer and the mooring ropes were cast off as the telegraph was jammed over to "half ahead." Instantly the powerful engines responded to the order and the little ship began rapidly to gather way. When the harbour bar had been crossed the order for full speed was given and the engines settled down to a low staccato roar as they drove the M.L. over the heaving swell.