“We don’t know anything. We saw two submarines last night.” “We saw a ship torpedoed about 7.00 this morning, but did not see the submarine.” “Have you been copying much?” “We have been copying mostly GLD messages and SOS messages and a few CHGT.” “Here is an SOS that came in at 1.10 P.M.—CG. GLD de FFK de “VEK” 47:45 08:40 W. 11025.” “We got that one and it did not mean that the last message was at 8.00 P.M. last night. We have got a few SOS messages. Have heard a lot of work.” “Yes, yes.” “Did you get that Allo from FFK?” “I just got part of it and am waiting for a repetition.” “Here it is. Allo 47:30 09:34 W. 1219. “Thanks. Thanks.” The garrulous U-boats seem to have kept up an endless stream of chatter, and the radio force of the _Corsair_ learned to know and identify some of them, by their manner of sending, as if they were old acquaintances. One of the reports will give an idea of this curious interchange of communication which was carried on between hostile craft, unseen and hunting each other with deadly intent: On November 21, 1917, the _Corsair_, _Smith_, _Preston_, _Flusser_, and _Lamson_ were returning to Base, position approximately Latitude 47° 30′ North, Longitude 8° 40′ West. A number of enemy submarines were intercommunicating as follows: At 8.36 P.M. one sub called another who answered, and two messages were sent. These signals came in very strong which indicated that subs were close to us. At 8.59 P.M. the same sub transmitted another message to the one communicated with before. At 9.01 P.M. a different sub called three others, one of which was the first sender. At 9.18 P.M. Bruges began sending a message to the sub that called at 9.01 P.M. At 9.57 P.M. Bruges was still heard. At 10.16 P.M. a different sub called another which was the one who received the messages at 8.36 P.M. At 9.36 P.M. the _Corsair_ was called and received a message from Brest. At 10.54 and again at 10.56 P.M. the _Corsair_ was called by an enemy submarine using P.F.B., the same call used by Brest. At 10.59 _Corsair_ answered and told him to go ahead. Sub sent “3 H 5” and then his signals died out. At 11.04 _P.M._ sub called _Corsair_ and told _Corsair_ to go ahead with message. At 11.10 _P.M._ the same sub called a British convoy. At 11.15 _P.M._ sub called _Corsair_ and said go ahead with message. At 11.16 _Corsair_ called sub and sent a message, the groups of which were taken from several intercepted German messages. At 11.17 sub acknowledged _Corsair’s_ message. At 11.25 P.M. sub called _Corsair_ and asked for a repetition of the second group. _Corsair_ did not answer. Sub repeated message. This time he was impatient as he said “Go ahead” twice. The subs continued to intercommunicate during the night, and also with Bruges.