The Sea Ray L550 Fly is a luxurious three stateroom, two head yacht powered by twin 850-hp CAT C12.9 inline 6s. Top speed during our tests was 30.3 knots. Best cruise was 2100 rpm where she had a range of 208 nautical miles. Fuel capacity is 580 gallons (568 L). Folding stairs rise automatically out of the hydraulic swim platform as it lowers into the water. She comes fully equipped right down to glassware and china with the Sea Ray logo.