
Posts: 3508
Location: Elk River, Minnesota | Hiya,
The Navigator series before 2005 had a beam of 82" and a 17 gallon tank. That model is still available today, but with a different name called the "Classic 165". The boat has remained basically unchanged for the most part.
One thing I have noticed on my navigator (2005) is I will never fully trust the fuel gauge. It gives me a general idea of where I am at for fuel, but when it hits E and doesn't move up when I throttle up and the bow rises, I know I am getting fairly low....but I always seem to find I'm 3 - 4 gallons below a full tank of 23 (my tank). When I first filled it new, it took all 23 gallons. But...I have never run it down to that point.
That might explain why your buddy may only see 11 gallons go in....
Steve |