I was sailing through the channel and the waters calm but theres heaps of fog so Im saling along and I get the "Aircraft spotted messsage." I hit crash dive but to late the plane drops a bomb right on the stern of my VIIB, which kills the one guy in the stern tubes and destroys everything in the stern tubes that can be damaged. It also damages my batteries on top of the hull damage. I finnaly get under the water but as I do I get a sound contact message. Mesuring it on the map I see it's about 3000 etres away moving at constant distance. I quickly hit silent but its to late as the destroyer closes in on my. Now I was in for a few ingame hours of being depth charged while I have damaged batteries and he actually hit me once again in the stern which knocked out one battery. I eventually managed to shake him off .