I've sorta figured out that the best "fuel economy" comes
between 2 and 3 (1/3rd and standard)...
If you pick a course and hit 2, then ask your N.O. the range...he'll come back and say max range is xxxxx km at this speed...
Hit that report range button about five times... make a mental note of the average...
Then hit 3 and wait for the speed to equalize at the new throttle setting... repeat the range reports...you'll see a new xxxxxkm number emerge...
Then change the indicator to speed and click at a speed roughly between the 1/3rd and standard speeds... and do the thing with the navigator again...you'll get what amounts to the best range possible.
At least, that's my experience! It's what's allowed me to raid the Irish coast in a type II and have plenty of go-juice for tactical maneuvering... hey! Stop :rotfl: at me! You can do tactical maneuvering in a type II!!!