![]() ![]() To replace an inboard/outboard motor would be much more costly. A boat equipped with an outboard is easier to repower or trade up to more HP or newer technology.In other words, more people want four-stroke outboards.* In general, however, inboard motors tend to be more fuel. Fiberglass outboard registrations have historically outpace I/Os. Overall, both types of motors have their advantages and disadvantages when it comes to fuel efficiency.Outboard motors are much more accessible and require less maintenance, no winterizing, and easier to work with the outboard outside the boat.Outboards have a more shallow draft allowing you to fish and boat in skinnier water than you can with an I/O.Typical a four-stroke outboard is approximately 400 to 500 pounds lighter than its inboard/outboard counterpart. Outboards offer better power to weight ratio.Now ask yourself, when is the last time your car. Four-stroke outboards offer much better fuel economy, less GPH, more MPG than I/O motors. So for example, a 225 horsepower outboard running at full throttle will burn about 22.5 gallons per hour.The Yamaha four strokes offer higher performance–quicker to plane, quicker 0 to 30 MPH, and faster top-end per HP.I/O engines are in the cockpit which takes up a lot of the boat that can be used for other features and comfort. Outboards provide more room in the boat because they are installed on the transom, outside the boat.Inboard/outboards are just “marinized” automobile engines stuck in a boat. Outboards are designed specifically for boating.So why should you choose an outboard over a inboard/outboard motor? Here are just a few advantages the outboard has over the stern drives: That’s why all of NauticStar’s Deck Boats are factory installed with high performance Yamaha outboard motors. Outboard vs Sterndrive vs Jet Drive The jet drive Glastron can easily navigate shallow water and carves turns with ease. Inboard/Outboard Stern Drive Posted on MaJby NAUTICSTAR BOATSįour-stroke outboard motors are becoming increasingly popular over inboard/outboard stern drive motors on pleasure and ski boats for a variety of reasons. But, almost all of the other many boats under 30’ out on the water around here are outboard powered and trailered to the ramp for a day on the water fishing or whatever, and I see lots of smiling faces on those boats, so the outboard set up seems to do the job for most.Why Buy a Four-Stroke Outboard vs. I am content with my General Marine 26, diesel low in the bilge with straight shaft through a reduction gear, wheel and rudder largely protected by keel/skeg. For me, the later list outweighs the former list in my area of operation and for my purposes, although strong and maybe compelling arguments can be made to the contrary. are also for some operators important considerations. Weight position and related ultimate stability, reliability, robustness, on the water repair-ability, safety (relative flammability of fuel type), ability to deal with errant logs, kelp, monofilament, webbing, cork lines, occasional groundings, etc. Those are three important considerations, for sure. I also tend to believe that for boats under 32' or under 16,000 lbs +- for recreational use, the outboard starts to make more sense from a performance/fuel consumption perspective.Ĭlick to expand.Very useful data for performance, fuel efficiency and noise levels. I'm posting these sea trial numbers to help educate those who are interested in the performance aspect of the diesel inboard versus gasoline outboard. For me personally, the most important numbers are cruise speed and fuel burn at cruise speed, where the diesel wins easily in this size of boats. ![]() The outboard's higher HP and less drag obviously yields a higher top speed. It's also easy to see that when the outboard HP is significantly higher, sometimes 2X more than the diesel HP, that the outboard is faster on the top end. When you look at the numbers, it's easy to see that in a cruiser style boat 32' and larger, the diesel has a definite advantage in lower fuel consumption at cruise speeds, which is the speed where most of us run our boats. I believe when you compare the performance differences of the Back Cove boats, you are getting about as fair of a comparison as possible. These comparisons are about as fair and even-handed as you will get they build virtually the same boats in diesel or outboard configurations, and they have no reason to skew the numbers to make one fuel type seem more advantageous than the other. For those interested in comparing performance and fuel consumption between an inboard diesel boat versus an outboard powered boat, Back Cove yachts provide some good apples-apples performance comparisons between their diesel and outboard powered boats. ![]()
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