Heres the rules for crusing the channed.
1 dont dive if you dont have to, that place is mine heven, Ive seen hundreds of mines on my channel trips (done it in 41)
2 stay on french coast.
3 when you dive go veary slow with little to no TC becuase of mines, they are everywhere.
4 dont radio out, theyl pick up on ya.
Im sure there are more but thats pretty much it.