Not sufficient Fuel

[Brag]

Welcome aboard Capn Andy!

Like the Kaleuns above say, the VII has more than enough fuel to reach any AN grid and operate without problems. Transiting at 7 knots you will arrive at assigned grid with a large fuel reserve.

[Der Kolkrabe]

Welcome aboard and Der Atlantische Ozean Capn Andy

Using Kanal out and in to Kiel, speed 1/3 ahead and daylights submerged - use that so no problem.

Last night I docked port to my second patrol.

Start Wilhelmshaven and drive by Kanal too Biscay Bay, there North and round British and Shetlands Islands and come back Norway Coast. I got message, that Der Kanal has mines. So I think it's better go long way back...

[3Jane]

Just over 8 Knotts in a VIIB will give about 22-23,000 Klm I find.

[John O]

Welcom.

As for fuel usuage, use your navigator to plot a course to a point and then check the distance and maximum range at the current speed. Use differerent speed levels including manual settings of 7, 8, or 9 kts to achieve maximum range. Don't forget to compute the return course and allowable time on station.

[Umfuld]

Originally Posted by 3Jane

Just over 8 Knotts in a VIIB will give about 22-23,000 Klm I find.

Yeah, that's what I get. From ports in France you can hit Canada, yo.

[Wreford-Brown]

I believe that 9 knots is the most fuel efficient, and there's a way to set your 'ahead standard' to any value you like.
Details here from Average Joe - one of the original pioneers who is unfortunately no longer with us:

"Here's a small speed-change I made to the VIIC class submarine .cfg file (NSS_Uboat7c.cfg).

Default values:
[EngineProperties]
AllStop=0.00
AheadSlow=0.40
AheadOneThird=0.57
AheadStandard=0.80 <---CHANGED to: AheadStandard=0.47
AheadFull=0.94
AheadFlank=1.00
BackSlow=-0.26
BackStandard=-0.40
BackFull=-0.53
BackEmergency=-0.66

This helps me in 2 ways:
1.) Submerged, and 'accidently' creating a new plot-course, especially when extremely close to a pack of DD's, or convoy merchants.
Since SH3 defaults to 'Ahead-Standard' when plotting a new course, sub-noise (props, electric motors, etc.) increases greatly! If this happens I usually get detected; mostly during critical points when trying to slip past escorts, and into a convoy of merchants.
2.) Setting for best fuel-economy cruise speed with the VIIC/42.
The VIIC/42's best 'econ-cruise' speed seems to be right at 9-knots. The change above sets 'Ahead-Standard' setting to 9-knots."

You can, of course, adjust the 0.47 value to change it to your preferred cruising speed. I used trial and error but I think this value is a % of max speed.