The U-boats during the war torpedoed five of our boats, viz.: "E 3" in the Bight in August 1914, "E 20" in the Sea of Marmora in November 1915, "E 22" in April 1916 off Yarmouth, "C 34" off the Shetlands in July of 1917, and "D 6" in the Channel in June of 1918. Of these, "C 34" was hit when almost under--the German U 52 firing at the top of his conning-tower as it went down. "E 22" was attacked while beating up and down waiting for orders to proceed to any threatened area on the day of the Yarmouth raid. She saw U-B 18's periscope and tried to ram it, actually bending down the enemy's bow "net-cutters" (the big steel saw that stands up in the bows of U-boats). The German, however, passed under her and got his torpedo in as she turned back. As far as is known, none of our boats were sunk by enemy submarines apart from the five named. On several occasions U-boats fired torpedoes and used guns against our boats, but the low hulls of English submarines provide very small targets. I suppose the majority of shells fired at English submarines came from English guns. Certainly the boats were far more nervous about approaching our own harbours than they were of working in enemy waters. The shooting was usually wild and could be treated as amusing, but on occasions fatal results precluded any joking. The surface anti-submarine vessels drew no fine distinctions, and the submarines at times used to deplore their own side's excessive zeal. There is a short extract from a certain boat's signal-log which begins, "Can you give me my position?" and which continues, punctuated by nine rounds of gun-fire, by way of injured protests, to "What did you do in the Great War, Daddy?" as, her identity established and the patrol ship's attentions deflected, the submarine continued her way up harbour. Out on the patrol areas, however, a British boat diving had to stand her chance. No surface ship could be expected to differentiate between our own and enemy periscopes, and the potency of British depth charges was highly spoken of by those of our boats that had experience of them. III