Define the route before defining the range

A South Florida departure to a nearby Bahamas destination is a different ownership mission from a trip that continues through multiple island groups. The same yacht can feel generously ranged for one pattern and constrained for the other.

Build the itinerary around the trips you expect to make most often, then use the longer meaningful legs to pressure-test the shortlist.

Published range should always come with a speed

Sunseeker publishes a Manhattan 55 range figure at a stated speed. Azimut publishes Fly 53 consumption and range at both slow and fast cruise. Those examples make the point: range is an operating-condition claim, not an isolated yacht attribute.

Ask what speed, test load and assumptions sit behind any number you plan to use in a buying decision.

Reserve is part of the requirement

A practical plan leaves margin for changing sea state, routing, diversion, fuel availability and other uncertainty rather than treating the end of theoretical range as an arrival target. The exact reserve policy belongs in real passage planning, not in a generic web rule.

The crossing is not the whole fuel story

Once in the islands, you may run additional legs, operate the generator, reposition for weather or change the itinerary. Buyers who focus only on getting from Florida to the first destination can underweight how the yacht will be used for the rest of the week.

Fuel capacity and range are not interchangeable

A larger tank does not automatically mean more practical range. Hull, propulsion, speed, load and sea state change consumption. Compare actual performance evidence rather than ranking yachts by tank size alone.

Build a range worksheet for each finalist

For every yacht, record verified fuel capacity, manufacturer-published range or consumption with speed, your expected cruise speed, the longest normal leg, planned reserve, likely refueling points and whether the same yacht still works if weather or itinerary changes. Unknown inputs should stay labeled unknown until confirmed.