The problem of fuel consumption remains. The specific fuel rate for the TF50, for example, is about 0.064 gallons per horsepower-hour, compared with 0.050 to 0.055 for diesel engines, a penalty averaging about 20 percent. This is mitigated by two factors, however. First, the turbine weighs only a fraction of what a diesel engine providing the same power weighs, so there's a bit of inherent savings there. Also, a turbine-powered yacht typically operates at top speed no more than 10 percent of the time, so the overall fuel premium will in all likelihood run less than 2 percent of the total fuel cost. And since fuel cost is only a fraction of overall operating costs, what looks at first blush to be a substantial penalty becomes insignificant in the total picture. In other words, we may see more gas turbine engines in the near future.