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Current Order No. 84 (August) |
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| Today, by using long distance reconnaissance planes and aircraft carriers, the enemy can bring in aircraft to attack on a D/F/ bearing in all parts of the North and Mid-Atlantic as well as in coastal waters. Therefore danger of being D/Fed has become more serious for U-boats using W/T. Inaccuracies of bearings of 50 to 60 nautical miles are corrected by the radar of the aircraft, see operational order No. 243. Hence the following notifications: | |||||||||||||||||
| 1) Make use of definite recognition by the enemy (sighting, attack) to transmit messages. | |||||||||||||||||
| 2) If it is necessary to use wireless at other times, a special watch must be kept by the look-out and wireless operator, after use of W/T. Remain submerged for several hours after a surprise attack alarm. | |||||||||||||||||
| 3) In handling W/T, care must be taken to tune in without radiation. | |||||||||||||||||
| 4) The danger of being D/Fed is less on alternative frequencies. For the use of these see operational order 208. | |||||||||||||||||
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