Well, only I can recommend some general considerations: minimum radio transmissions to avoid the interception by the enemy with the H/F D/F, take calculated risk and broke the contact in time, better to sink only two merchants and scape to fight another day, avoid the planes detection, certainly, he trasmit your last position to the escort and then you have, two, three or more escorts chasing your U-Boots for hours. Minimum time with the periscope Up, memorize the possible HDG and position of the targets.Go to the attack with all the parameters ready, torpedo tubes open, speed and depth, pistoles contact.Be not too longuer in the target selection, fire, dive and go for the depth with minimum noise.
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