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Irish eyes will be smiling at you while you’re filling the fuel tank of this walkaround’s single diesel inboard. But you’ll pay up front: $82,000 for

At a cruise speed of 28 miles per hour, the Shamrock 246 Adventurer sips only 8.3 gallons per hour, which equates to 3.1 miles to the gallon. That’s more than three times better fuel economy than some twin-outboard boats.

Last month, we published an editorial that called for the marine industry to stop hyping horsepower and speed and come up with some boat-engine packages that are more economical to operate. In turn, PBR promised to seek out boats to write about that aren’t fuel guzzlers. The Shamrock 246 Adventurer is one of them. At a nice cruise speed of 28 miles per hour, this single diesel-powered walkaround gets more than 3 miles to the gallon. This kind of economy is particularly attractive to a fisherman like Jim Copple. …