We are dedicated to giving fair wholesale offers based on the true market value of your vessel. See which motor fits your needs best and then go from there in your buying process. You have more control over the wake and great towing power which is essential for those activities.īoth motors serve different purposes and are a key component to what type of boat you are interested in buying. This style of motor is favored for water sports such as wakeboarding and waterskiing. This significant improvement in efficiency allows you to either spend less money per journey or to significantly shorten travel time.These motors are built similar to car engines therefore they are very complex but prove to be a stronger engines than outboards. At todays rate of $3.50 / gallon for diesel that will cost you $76.70. In comparison, that same trip at 30kts with an inboard sterndrive will burn 21.9 gallons (83L) of diesel. At $3.30/ gallon the trip will cost you $144.60. In the outboard powered monohull at 30kts, you would make the trip in one hour 40 minutes, and burn 43.8 gallons (166L). Motoring from Miami, Fl to Bimini in the Bahamas will be the example used, whose journey equals 50 nautical miles. So how does this effect your boating? Well, as per our catamaran vs monohull scenario, let’s consider this data in a real life scenario to visualise the fuel efficiency. That’s 50% better fuel efficiency at 30kts, which is a significant difference, especially over a longer period. The outboard vessel burned 26.4 gallons (100L) per hour compared to just over 13.2 gallons (50L) per hour for the sterndrive. At 30 knots, the difference was even more impressive. In comparison, the inboard sterndrive-equipped boat burned through only 10.6 gallons (40L) per hour. With both boats running at 25 knots, the outboard-powered petrol boat burned 15.8 gallons (60 litres) of fuel per hour. One well-publicized test compared two comparable 9m boats, one equipped with a pair of 200hp outboards and other with twin 220 hp diesel inboards, at two speeds. However, diesel inboard sterndrive motors remain winners in this race for fuel efficiency. The sophisticated four-stroke outboard engines available to boaters today have come a long way from the smelly and thirsty motors of the past. The 440hp inboard diesel sterndrive offers lower fuel consumption compared to 400hp outboard petrol motor for both speeds, making inboard sterndrive the more optimal choice Inboard Diesel Sterndrive has Greater Fuel Efficiency The test shows how different the level of fuel efficiency is for inboard diesel sterndrives in comparison to petrol outboards, and what this could mean for you as a future power catamaran owner. Lets take a look at some comparisons made by benchmark tests to observe this. Despite continuous debates, the data suggests that the diesel sterndrive clearly wins on fuel efficiency, every time. This is a topic that has been much discussed, and debated at watering holes and yacht clubs globally. Outboard Petrol vs Inboard Diesel Sterndrive Each drive type delivers it’s own advantages and compromises, but this will be discussed further in a future article. The common drive types can include direct shaft drive, v-drive, z-drive, jet drive, pod drive, surface drive and stern drive. Then a choice of fuel type (petrol or diesel), followed by a choice of a naturally aspirated, supercharged or turbocharged, and then an abundance of drive options to choose from. Firstly, you have a choice of the engine brand, in our case we opted for YANMAR. While outboards are typically very similar between brands (with an exception of some new low hp electric outboards and now even diesel outboards hitting the market), inboards on the contrary can vary significantly. Today the article is comparing inboard diesel sterndrives vs petrol outboards, with fuel efficiency in mind.
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