I thought I’d interject a quick blog entry with some fuel economy numbers for Sea Spirit. As you may recall, she’s a very slippery Sparkman & Stephens hull design, so we knew she’d get good fuel economy. But we were so busy learning how to run the boat that it took us a couple of months to get around to truly measuring it.
In order to do the measurements, we picked a calm day (of which we had plenty in the Exumas), and made sure that our GPS speed and our speed-thru-the-water numbers were confirming that there was little to no current. We then warmed up the boat to normal operating temperature, and ran her at various RPMs in order to measure the fuel usage.