Hi LCQ_SH
Do not make saves around any attacks or within 60km of any enemy destroyed marks.
sober says that if you have to make saves when submerged then to do so with the periscope up and then using the esc key x 2 you can make a manual save.
The problem with the sonar man possibly could be to do with the speed of the ship.
At around 5 knots or less he may not hear anything.
Peter
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