[Fidd]

83. Variable hydrophone range.

This could be used to put uboats beyond visual and hydrophone range, at game start, with the convoy position at time xx xx and heading being given by BDU Encrypted radio signal, thus giving some much needed content for navigators and radio-operators to determine an intercept; without that intercept taking hours to make (although that too could also be done)

(Idea from Decafbad)

It could also be a lobby-setting that initial hydrophone range is limited, so that a uboat would be forced to use navigation and Enigma decrypts to find a convoy, then broadcast the location of the convoy so that other boats can find it, however, once the u-boat gets within a specified range of the convoy (8km or so???) the hydrophone will not produce the sound of the convoy, regardless of gain, but once within 10km, thereafter the range-limitation is lifted. The advantage of this method is that initially the Nav and Radio operators would have to work out the course to intercept the convoy, BUT the time taken to reach it would not be unduly long. Once the convoy is within 10km (say) the hydrophone operates normally...