The list of "Contacts" with enemy submarines shows that in seven cases the enemy was sunk less than five miles from a headland or navigational mark. When proceeding between mine-fields, or when bound for dangerous waters, it is natural for submarines to get a good departure or landfall if possible, but all such strategic points are unhealthy to approach. The following two cases illustrate this. In each of them the U-boat Captain closed a light in order to get a good navigational departure, and in each case his precaution had fatal results:-- On the 5th April 1917, "C 7" (Lieutenant A. W. Forbes) was waiting at the Schouwen Bank gas-buoy, watching the channel that led to Zeebrugge. She lay on the surface with half-buoyancy, and was undoubtedly, as can be guessed from the despatch, on the "top-line" in the matter of being ready for action. Lieutenant Forbes' First lieutenant was on the sick-list most of the trip, so that he himself was pretty well worn out on his return to harbour by continual watch-keeping and anxiety. "3.32 A.M.: Sighted submarine on port quarter steering about north, distant 400 yards. Turned and at once fired port torpedo at a range of about 250 yards. Torpedo hit forward with loud explosion, sending up a large column of water. Submarine turned to port and sank in a few seconds. The night was very dark and misty, and no survivors or debris could be seen." In "E 52's" (Lieutenant P. Phillips) case, U-C 63 was caught as she passed a well-known light-buoy north of the Dover Net Barrage. "E 52" (with her conning-tower only showing) attacked so as to keep the enemy against the moonlight. The only survivor was a Petty Officer, who gave the following account:-- "The night being very cold, the Navigating Warrant Officer, who was on watch, sent the A.B. below to get some coffee. In the meantime the engineer of the boat came on the bridge and stood talking to the officer of the watch, who, in consequence, failed to keep a proper look-out. The Petty Officer himself, chancing to look to port, suddenly saw a submarine on the surface.... U-C 63 had just started to turn when she was struck by a torpedo amidships." And that survivor's statement would be a good thing to frame and put on every ship's bridge in war-time! The critical time when a bad look-out was being kept could not have been more than a few seconds, but it was long enough to cause death to all but one of the submarine's crew.