I also recently started a late career with the XXI just for a change a pace and because I've never really played with this sub much. Operation Monsoon (I'm assuming that the stock game doesn't do this as much but I don't know) has a lot of PBYs that utilize the MAD detection system and it's a royal P.I.T.A.!

During the day I'm traveling along submerged at 400-500' and I'm still taking lots of damage to my engine room. I've not read up on this system and how it works but I'm aware that it is totally realistic to be spotted at that depth but to be able to be hit so consistently? I'm not so sure. I mean the depth charges have to take time to travel that distance below the surface and with its' friction I would think it would be very hard to hit a sub traveling at 2-3 knots at 500' as they would have to figure out how far ahead of me to drop in order to take all the variables into account. They didn't have computers for this telling them to release now or anything but every single day while I'm traveling to my patrol area I'm getting hit. Once hit I then start to do evasive maneuvers but still... is this realistic?
I'd also appreciate any tips on trying to survive these types of attacks. I haven't died yet but boy would I like to now be hit every single day... tends to put one in a bad mood and I want a happy crew, not a pissed off wounded one.

Thanks for any tips!