Bear in mind the obvious: The performance numbers we gathered from a two-way average will differ from those you may get in smoother conditions. If an average 28-knot cruise at 2000 rpm can be achieved when things are nasty, it's an easy conclusion that a higher speed is possible. According to Neptunus, you can expect a cruising speed around 30 knots with the 1,000 hp Caterpillar C18s, the same engines aboard our test boat. At a 67 percent load, or 1800 rpm, we sipped 64 gallons per hour and cruised at an average of 23.3 knots, proving the 62 will have the legs needed for a run to Nassau or down the coast of Baja. If you want to be more conservative, Neptunus offers twin 800 hp Caterpillar 3406 diesels. Based on my days on the yacht-building side of the fence, I recommend going with the C18s for their resale value alone-on the brokerage market, bigger is often viewed as better.