This shows how the concealed 12-pounder gun could be brought into action by removing the boat’s sides. The bow end of the boat has been moved to the far side of the gun, where Captain Grenfell, attired in his “mystery” rig of a master mariner, is seen standing. As will be seen from the other photograph, the sides of the boat when in position were a perfect fit. The coil of rope was intended to hide the gun’s pedestal from observation by the enemy. To face p. 120] The Q-ship then altered course to E. 1/2 S. as though running away, and reduced to half speed to allow the enemy to come up. Boats were turned out, the panic party stood by with lifebelts on, and just after one o’clock, at 3,500 yards range, the U-boat opened fire, whereupon the Q-ship ‘abandoned’ ship. Then the enemy closed to 1,500 yards on the starboard bow, but cautiously submerged, and then, closely and leisurely, inspected the ship from the periscope. Having done that, and apparently been quite satisfied that this was no trap-ship, the submarine emerged on the port quarter, 600 yards away and broadside on. One German officer then came out of the conning-tower and two other men looked out of the hatch. The first then shouted for the captain to come alongside with the ship’s papers, but the British petty officer in charge of the boat party, in order to gain valuable time, ingeniously pretended not to understand. The German then repeated his order, so the petty officer replied he would bring the boat round by the stern, the intention, of course, secretly being for the purpose of affording _Penshurst_ a clear range. The petty officer’s crew had not rowed more than three strokes when bang went _Penshurst’s_ guns, at which the German officer leapt through the hatch of his conning-tower, a shot hitting the after part of this superstructure just as the officer disappeared. Two more shells got home in the centre, another hit the hull abaft the conning-tower and burst, one holing the hull below the conning-tower’s base. The submarine dived, but after a few minutes her bows came up out of the water at a steep angle. Fire was then reopened at her, and one shot was seen to go through her side, and then once more she submerged. Two depth charges were dropped near the spot and exploded, and then again the bows of the enemy broke surface at a steep angle, but 3,000 yards to the westward. Next the after deck came to the surface, and all the crew came out and lined the deck. _Penshurst_ resumed shelling, hit her again, but U 84 now returned the fire. She was a big submarine, 230 feet long, armed with a 4·1-inch and a 22-pounder, and a dozen torpedoes which could be fired from six tubes.