What is your strategy for saving fuel?

[CjStaal]

Originally Posted by Kip336

That actually does not save fuel, as your diesel engines need to be on a higher speed setting to get the batteries charged.

Test this:

1) Stay submerged for a while untill your batteries are down a bit (Atleast enough to need a while to recharge. Maybe at 90%.

2) Surface your boat and order flank speed.
a) Your batteries will be charging; check your speed and remember (For a VIIB itll be about 13-15 knots at flank while charging
b) Go to your chief engineer, and select normal propulsion. Now see your speed increasing to the full 17 knots.

The best way to save fuel is simply by ordering a slower speed while enroute to your patrol area.

Well it seems to be working. I know that in real life it doesn't work, but it works here.