[Rambler241]

Your far-too-frequent (and to my mind unnecessary) reports will be your undoing, Farflung Wanderer. The Tommies had primitive HF/DF ("Huff-duff") direction finding in place at the outbreak of war, and improved it in leaps and bounds as the "Uboat War" progressed. At best this resulted in fewer target intercepts, and so fewer sinkings than would otherwise be the case, as convoys were re-routed to avoid estimated Uboat (and later Wolf-pack) positions. At worst it resulted in Uboat losses as allied aircraft, convoy escorts, and later, Uboat hunting-groups, were directed to the estimated Uboat locations. Destruction of Uboats was the aim, "keeping 'em down", and so at much slower speed, an acceptable second-best.

Also, available frequencies for Uboat communication were limited, and "chatter" was frowned upon by the KM. The longer the message transmitted, the greater the risk of transmitter location. By 1942, 20 seconds of transmission was enough for a fairly accurate location estimate. Careless talk costs lives, as the Tommies said, and it applied (and still applies) to the armed services of all nations.

However, good luck, and happy hunting, and don't forget the need for frequent sonar sweeps.