I'm curious if power cat operators typically run one or two engines while underway. The potential fuel savings running one engine could be substantial on the larger power cats with 150+ hp engines.

On my Saba 50 catamaran with twin 75 hp engines, running both engines obviously doubles the fuel burn but with only 0.8 kt increase in speed (equivalent to a 10 minute time savings motoring to Anegada from North Sound). I prefer to run one engine to minimize overall engine hours, fuel consumption, and especially noise and vibration in the cockpit. It requires only a few degrees of rudder angle to compensate for the offset thrust.

Diesel price at Crown Bay Marina in St Thomas was $3.17 last week, $3.18 this past December, $3.21 in November, $2.60 in June, and $2.75 last March. Looks to be about $0.20 cheaper than BVI prices.