In arranging action stations in a Q-ship the difficulty was that internally the vessel had to be organized as a warship, while externally she must necessarily keep up the character of a merchantman. In _Penshurst_ Captain Grenfell had arranged for the following signals to be rung from the bridge on the alarm gong. One long ring meant that a submarine was in sight and that the crew were to stand by at their respective stations; if followed by a short ring it denoted the enemy was on the starboard side; if two short rings the submarine was on the port side. Two long rings indicated that the crew were to go to panic stations; three long rings meant that they were to go to action stations without ‘panic.’ ‘Open fire’ was ordered by a succession of short rings and whistles. With regard to the above, in the case of action stations the look-out men on the bridge proceeded to their gun at the stand-by signal, keeping out of sight, while the crews who were below, off watch, went also to their guns, moving by the opposite side of the ship. In order to simulate the real mercantile crew, the men under the foc’s’le now came out and showed themselves on the fore well deck. If ‘panic’ was to be feigned, all the crew of the gun concealed by the collapsible boat were to hide, the signalman stood by to hoist the White Ensign at the signal to open fire, and the boat party ran aft, turned out the boats, lowered them, and ‘abandoned’ ship, pulling away on the opposite bow. The signal for standing-by to release the depth charge was when the captain dropped a red flag, and all guns’ crews were to look out to fire on the enemy if the depth charge brought the U-boat to the surface. [Illustration: [_Photo. Heath and Stoneman_ THE GALLANT OFFICERS AND CREW OF THE Q-SHIP “DUNRAVEN.” Captain Gordon Campbell is in the second row with Lieutenant C. G. Bonner on his right. To face p. 216]