Quote:
Originally Posted by GoDeep
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The slower you go, the further you can travel (less rpms for the diesels). The type VII traditionally cruised at about 7 knots, which seemed to be the most fuel efficient speed. The faster you go, the more fuel you burn, of course.
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Not completely accurate. There is a maximum efficiancy at a certain speed. If you go faster then you burn more fuel, but if you go slower then you also burn more fuel per kilometre.
To the thread starter: Just set your uboat to different knot settings, let the needle settle on it, then ask the navigator for range possible at current speed. As said, keep in mind the recharge setting and weather conditions. Wind direction and such doesn't really affect fuel efficiency, but you do go less far in heavy weather.