![]() ![]() ![]() It’s important to note that the running surface of the jet-powered GTS 187 is specific - Glastron did not simply drop the jet drive into the sterndrive hull and call it a day. The jet ran 43.5 mph, handicapped despite its power advantage by its lack of trim, which on the outboard and sterndrive let us raise the bow and reduce drag. Top speeds for the outboard and sterndrive boat engines were very close, at about 49 mph. This weight difference will affect every aspect of performance and economy. There’s a spread of 610 pounds between the outboard, our lightest version of the boat, and sterndrive, the heaviest version, with the jet weighing 60 pounds more than the 2,120-pound outboard-powered boat. We used Rec Boat’s tech-center scales to weigh the test boats. ![]() However, it has very quick steering and is extremely agile. Outboard vs Sterndrive vs Jet Drive The jet drive Glastron can be a little trickier to dock or load on a trailer due to the absence of a rudder on the jet pump. We encountered the expected compromises with each powertrain, but there were a few surprises too. We compared performance, dimensions, features and cost to see if one power option would prove superior. Glastron provided an outboard-powered GTS 180, a sterndrive-powered GTS 185, and a jet-powered GTS 187 for trial on the same day at its test facility in Cadillac, Michigan. Glastron recently achieved a trifecta of sorts, becoming the first boatbuilder to offer the same 18-foot bowrider with each power option, which presents us with a golden opportunity - the chance to finally mount a real head-to-head comparison of outboard, sterndrive and jet propulsion. Outboard, sterndrive or jet drive: These are the available boat engine choices in today’s runabout market. Boat Engine Comparison: Outboard vs Sterndrive vs Jet Drive When Glastron said it was making a runabout available with three different power types we jumped at the chance to pit: outboard versus sterndrive versus jet drive. ![]()
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