Maretron FFM100, positive displacement fuel flow metering
As illustrated above, the fuel cost for cruising Gizmo varies enormously with speed. It’s fortunate that we like poking along at 6 to 8 knots in most conditions because knocking off miles on a 16-17 knot semi-plane is 4-5 times more expensive. But as suggested by the lumpy lines, those fuel-flow versus boat-speed numbers are not necessarily precise, and since I was only able to collect them on one day, they definitely don’t reflect changes in vessel trim, bottom cleanliness, engine condition, etc. I’d love to have accurate real time fuel flow data flowing around Gizmo’s NMEA 2000 network and thus am excited about Maretron’s FFM100 system, which was recently introduced with bold claims…






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