Signing to the two seamen, the Sub led the way aft. Here, by means of a length of signal halyard, Fordyce lowered himself upon the exterior shaft of the seized-up propeller. It was a risky job, for should he relax his hold he would sink to the bottom of the sea, a distance of 90 or 100 feet; and, more than likely, if he made use of his self-raising apparatus he would find his upward progress intercepted by the intricate meshes of the net. Examination showed that the blades of the propeller had cut through a part of the flexible steel entanglement and the stranded ends of the wire had wound themselves firmly round the boss. The only thing to be done was to sever the wire still attached to the rest of the net and unwind it. Fordyce pointed to the work to be attacked. The two men instinctively knew what was required and set to work with their hacksaws while the Sub kept the light fixed upon the object of their labours. Presently he listened intently. Above the faint hiss of the air escaping through the release-valve of his helmet he could detect the rapid threshing of a vessel's propellers. Louder and louder grew the sound. Submarine undulations almost swept the three men from their precarious perch as a swiftly-moving craft passed 60 feet overhead. The suspended net swayed to and fro like a flimsy curtain in a strong draught, while into and beyond the faint halo of light swept the bight of a metallic rope. The Sub's first inclination--that of self-preservation--was to release his stock of compressed air and rise blindly to the surface. It took all his presence of mind to subdue the temptation. He knew the danger. At the end of that trailing cable was a powerful charge of high-explosive. A hostile destroyer was doing her level best to blow the trapped submarine to smithereens. CHAPTER XIII Kapitan-Leutnant von Hoppner's Prowess "There are worse tasks than this," mentally observed Kapitan-Leutnant Ludwig von Hoppner of H.I.M. torpedo-boat V201, as he went below to his cabin. "Himmel! There is but little chance of destruction in these waters, unless we have our orders to attack the Russians, but it is infinitely to be preferred to service in our unterseebooten. Thanks to our elaborate defences against those accursed Englanders one can enjoy a good night's rest afloat. It was indeed thoughtful of my friend, von Rutter, to get me transferred from the Cuxhaven division to the Baltic." Unfortunately for von Hoppner's good intentions his idea of having an undisturbed slumber was rudely shattered by the appearance of a messenger. "What is it, numskull?" thundered the Kapitan-Leutnant. "A signal from the flag ship, Herr Kapitan," replied the man. "The armed liner _Komoran_ has arrived from the South Atlantic with numerous prisoners. We are to pass her through without delay." Grumblingly von Hoppner resumed his recently-discarded greatcoat and muffler, thrust his cap over his eyes, and made his way on deck and thence to the bridge.