One warning if you try the U-Boat campaign
Based in Pearl I generally refit in Midway to top off my tanks. That makes fulfilling missions in the East China Sea and/or the South China Sea eminently doable on limited fuel provided that you follow the earlier advice as to fuel economy. At 9 knots it generally takes 30% of the fuel to get there and 30% to get back. That leaves you 40% to spend in your mission zone.
If you try the U-boat campaign, remember... There's a Walther boat that you may get that is speedy but a gas hog. The missions in the career game do NOT take account of the boat's limited range.
There SHOULD BE a milch cow sub or a sub tender somewhere on the way to Madagascar but there's not. Either find a mod with that or never try those assignments.
__________________
 If I can't be a good example, I'll be a glaring warning! 
AMD Ryzen 7 2700X Eight-Core Processor, 3700 Mhz, 8 Core(s), 16 Logical Processor(s)
Windows 10 Home
Installed Physical Memory (RAM) 16.0 GB
NVidia RTX2070 16 Gig
|