Now that the war is progressing (I just made it to January 1941! Yay me!
) I'm trying to get in the habit of submerging every day for a couple hours around both sunrise and sunset, even in areas where I'm not expecting to be surprised by too much of anything. When I do that, or submerge for an extended period of time due to weather/visibility, I'll go deeper. Usually 40-50 meters down, for cruising submerged. If it's just a quick dip to check the 'phones, I figure 30m is plenty realistic... altho I'm pretty sure that in the game the sonar kicks in any time you register a depth of 10m or more. I've gotten contact reports from my sonar dude while running on the surface in very heavy seas... any time we dip downward enough and have a sufficiently big wave wash over, just for an instant we'll be pushed deep enough to count as submerged and suddenly Funkmeister Helmut is telling me he hears something.
I try not to listen but, golly, that "feature" sure does come in handy sometimes.
