Edit OK, I just re-did my install, all-a-fresh now, and took a Tambor out in a new career December 9th departure Pearl Harbor to recon Eniwetok. Once out of Pearl, running at Ahead Standard for a few hours, I asked what my range would be and was given "18,000 nm", which is a bit long. It should be lower. I'm wondering if that's what the trouble is, jldjs? I did burn 5% of my fuel getting to Eniwetok, which is about right for the ratio involved, but not quite an accurate figure, so we're looking further into that now also...
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[QUOTE=propbeanie;2623539]Did you happen to notice the fuel usage in those boats by chance?
Fuel usage seemed okay with all boats including the Gar when I returned to Brisbane before the transfer. It seems if all the boats i’ve used are getting significantly better fuel usage than the previous build. No hard numbers but I took the Gar to Convoy College from Brisbane averaging 12-13 knots and had 92% reserve, a trip of near 3300nm.