It was probably something of a relief when the expected explosion took place. The submarine had to go only 200 yards more to be under the fire of three guns at a range of 400 yards, but just as it was rounding the stern the German officers and men, standing on the deck, were greeted with a terrific roar. Suddenly a conglomeration of men, guns, and unexploded shells was hurled into the air. The German crew, of course, had believed that the vessel was a deserted hulk, and this sudden manifestation of life on board not only tremendously startled them, but threw them into a panic. The four-inch gun and its crew were blown high into the air, the gun landing forward on the well deck, and the crew in various places. One man fell into the water; he was picked up, not materially the worse for his experience, by the _Dunraven's_ lifeboat, which, all this time, had been drifting in the neighbourhood. It is one of the miracles of this war that not one of the members of that crew was killed. The gashed and bleeding bodies of several were thrown back upon the deck; but there were none so seriously wounded that they did not recover. In the minds of these men, however, their own sufferings were not the most distressing consequences of the explosion; the really unfortunate fact was that the sudden appearance of men and guns in the air informed the Germans that they had to deal with one of the ships which they so greatly dreaded. The game, so far as the _Dunraven_ was concerned, was apparently up. The submarine vanished under the water; and the Englishmen well knew that the next move would be the firing of the torpedo which could confidently be expected to end the Q-boat's career. Some of the crew who were not incapacitated got a hose and attempted to put out the fire, while others removed their wounded comrades to as comfortable quarters as could be found. Presently the wake of the torpedo could be seen approaching the ship; the explosion that followed was a terrible one. The concussion of the previous explosion had set off the "open-fire" buzzers at the gun positions--these buzzers being the usual signals for dropping the false work that concealed the guns and beginning the fight. The result was that, before the torpedo had apparently given the _Dunraven_ its quietus, all the remaining guns were exposed with their crews. Captain Campbell now decided to fight to the death. He sent out a message notifying all destroyers and other anti-submarine craft, as well as all merchant ships, not to approach within thirty miles. A destroyer, should she appear, would force the German to keep under water, and thus prevent the _Dunraven_ from getting a shot. Another merchant ship on the horizon might prove such a tempting bait to the submarine that it would abandon the _Dunraven_, now nearly done for--all on fire at one end as she was and also sinking from her torpedo wound--and so prevent any further combat. For the resourceful Captain Campbell had already formulated another final plan by which he might entice the submarine to rise within range of his guns. To carry out this plan, he wanted plenty of sea room and no interference; so he drew a circle in the water, with a radius of thirty miles, inclosing the space which was to serve as the "prize ring" for the impending contest.