Yep, I read your post, BBW...great story.
Ok MrChris, you're on the job.

When you get back from 1st patrol, please visit us here at the bar, and share some tips and stories.
I'm particulary interested in shallow-water tactics (<100m depth), as I don't take the long "safe" routes anymore. They're hardly safer than just sailing due West straight between the Shetlands and Schotland, DOH!
I installed Vikinger's
Clean Map Mod, so that I have a better map-view on depths...I need to find every meter more that I can get.
Here's an example, from an attack just East of Schotland.
It shows a convoy-route, the interception course I took, the attack-area, and the escape-area...all made up at least half a day before the events took place.
If I remember well, general depth was around 75m, and the escape-area was around 120m.
Using GWX, btw.