Since I have changed the fuel storage and I am replacing the Westerbeke 35C with a Beta 38, I need to re-estimate the range under power. I previously estimate the range to be 625 NM.
Consulting the performance curves for the Beta 38:
And, considering the tankage of 60 gal for the main tank + 15 gal in the day tank + 30 gal on the deck = 105 gal total, assuming 2200 RPM (fuel consumption is about 2.0 l/h = 0.53 gal/h), and assuming Aegir-Ran would achieve 5 NM/h at 2200 RPM, I calculate a range of:
1 h/0.53 gal x 105 gal = 198 h; 198 h x 5 NM/h = 990 NM
Once the boat splashes, I will begin keeping an accurate fuel log.
Now that I have fuel level sensors and a fuel monitoring system on the NEMA 2000 network, I will start keeping closer track of actual fuel usage.