Now, at a distance of less than a hundred yards, success looked like becoming realization. Altering helm slightly C 3 charged the viaduct at full speed, hitting it fairly at right angles. The blunt nose of the submarine glinted over a horizontal girder, lifting the hull quite two feet out of the water. Still carrying way, C 3 lurched forward until the base of her conning-tower brought up against the massive iron braces of the pier. There she remained hard and fast, save for the quivering movement imparted by the ground-swell. Overhead were hundreds of Huns still delirious with glee at their easy victory; underneath, a handful of cool and resolute Britons determined to do the job thoroughly and efficiently. C 3 had been fitted with gyro steering-gear, a device similar to that of the Whitehead torpedo, to enable her to steer automatically for her goal after her crew had abandoned her. But, taking no risks on that score, Lieutenant Sandford, the officer in command, had resorted to the ordinary methods of steering until the submarine was securely wedged under the viaduct. Before the actual impact C 3's crew mustered on deck. In that exposed position they remained within full view of the enemy; yet, confident that the submarine's crew would speedily be made prisoners, the Germans forbore to fire. The order was then given to ignite the fuses. Having made sure that the desired explosion would take place, Lieutenant Sandford gave the word for all hands to embark on the skiff. Then the disconcerting discovery was made that the skiff's propeller had received damage. The little motor was useless. All that could be done was to make use of oars in a race against time. It was a hard tussle, with the tide boring against the deeply-laden boat. Unless a certain distance was covered before the explosion took place the men would share the fate in store for the Huns. To add to the difficulties the Germans, on finding that the dinghy was leaving the submarine, opened a furious fire with pom-poms, machine-guns, and rifles. It was indeed a mystery how the skiff survived the ordeal. Holed many times, her officer in command twice wounded, and several of her crew hit, she struggled manfully against the current, her pumps going all the time to keep the inrush of water under control. Yard by yard the little boat drew away from the abandoned C 3. Fritz, wild with rage at being baulked of the capture of the crew, redoubled his fire, more men and more machine-guns being brought up to harass the elusive skiff-dinghy. By dint of strenuous exertions the boat gained a distance of about two hundred yards through the bullet-flecked water when, with a tremendous report, the explosive cargo of C 3 detonated. In an instant the viaduct went up in a cloud of flame-torn smoke, taking with it men, guns, and search-lights. The air was full of falling debris, a great quantity dropping into the water all around the skiff.