Quote:
Originally Posted by cobalt
I use greywolves. I try to makea run on convoys in the middle of the night on the surface and the escorts always spot me at like 4000 meters.
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The weather, your speed, and your angle to ships are all factors that contribute to you being sighted visually on the surface. To get as close as possible before being sighted you should be coming at them head on, slow (ahead 1/3 or less), and with a chopy sea. Under these conditions I have been able to get well within 2000 meters before being sighted by ships (type VII). Of course convoys are much harder to sneak into due to there being multiple ships viewing you from different angles. Its best to use this tactic against lone merchants. Against convoys your best bet is probably the 'Das Boot' method, charge in at high speed and fire from long range, then get out of there. Also if it is 1942 or later beware you will be spotted by escort radar far beyond 4000m.
Good hunting.