SUBSIM Radio Room Forums - Maximum Range at current speed reports

Before I start, I just want to sum up my 'tech know how' with a quote from Oddball in the movie 'Kelly's Hero's':

"I only ride the things, I don't know how they work."

Now that you pretty much get the idea of my level of things, I ask this question:

Is there a fault with the 'Maximum Range at current speed' reports?

I ask, because I got the following reports (simplified for reading sake), while just leaving port. For reference, I'm in a Gato in April 1942 and using SH4 1.5 with RFB and RSRD (current versions). I would select X speed, wait to settle, check report, then repeat:

4236 miles - at 3kts
8281 miles - at 6kts
10565 miles - at 10 kts
4091 miles - at 17kts
2671 miles - at 21kts

Now, I have read that the best balance between speed and range is with the Ahead Standard bell (10kts), so speeds above this make sense that I have lower maximum ranges.:up:

What I don't understand is the lower maximum ranges at the lower speeds, and hence my question of a fault with the reporting function. :hmm:

However if this is the case and the above 'reports' are 'correct' then I shall ask no more, and be at least content that things are the way they should be.

I did do a search, but I couldn't seem to find what I was looking for. In the case that I have missed an explanation, I would be grateful if somebody could point me in right direction, or give me a run down on why things are the way they are.

I posted here, because of the above mods I using (RFB and RSRD) and thought this was the correct place to put my question.:oops:

Cheers for any help.