One such adventure would suffice most men. Not so Commander Gordon Campbell. He was ‘at it again’ in August 1917, when in command of another Q ship, the _Dunraven_. This particular vessel was ostensibly an armed British trader. On the U-boat beginning the action, the undisguised stern gun was brought into play, the speed of the ship reduced so that the submarine might overtake her, and wireless calls for help were sent out. She caught fire aft, in the vicinity of a magazine, above which was a concealed gun with its crew ready for immediate service. Shortly after the panic party left the vessel the magazine exploded, starting the electric gongs that signalled ‘Action’ at the other gun positions. This was unfortunate, for only one weapon could be brought to bear on the enemy, then in the act of submerging. Although the _Dunraven_ was on fire, a wireless code message was sent to warn approaching traffic not to intervene. After two torpedoes had struck the vessel a second panic party abandoned ship, leaving the guns unmasked. Apparently not a soul remained on board, but the commander of the submarine was evidently not quite sure. For nearly an hour he regarded discretion as the better part of valour. He merely watched and waited for the ship to blow up or go down. As the mystery ship did neither, the U-boat pounded her for twenty minutes, then slowly passed at a distance of about 150 yards. A torpedo fired by the _Dunraven_ missed by a hair-breadth, but was apparently unperceived. A second torpedo was tried as the enemy returned on the other side. That likewise failed. Uncertain as to the next proceeding of her astonishing antagonist, the U-boat made off. When destroyers arrived on the scene the fire on the gallant little ship was got under, and a valiant attempt made to keep her afloat. She eventually succumbed to bad weather. But what a career, and what superb courage! You will not meet the like in fiction. These wonderful mystery ships, that took such a lot of sinking, that purposely courted trouble to entice their aggressors into the same, were no ordinary vessels. Externally, as I have said, they resembled rusty old tramps; internally they were built for battering. Iron girders gave them additional strength, and bales of cork served to check the shock of a torpedo and keep them afloat. No wonder Fritz got scared and threw up the game! CHAPTER XV _Bottling up Zeebrugge and Ostend_