Difference between marine inboard engine and marine outboard engine

Investing in a boat is a major financial step, regardless of whether the reason is for leisure or professional purposes. Boats can cause as high as $23,000 or more and any components or accessories that come along with it can rack up a significant amount. Because they involve such high prices, it’s crucial that you know exactly which part is most suitable for your boat. And one important component, if not among the most important, is the engine, which can come as either an inboard engine or an outboard engine. Whichever is best is entirely dependent on your need. Read below for a detailed account on the advantages and disadvantages that comes with inboard and outboard engine.

The obvious difference here between the two is, of course, the location to where the two can be placed. The outboard motor forms its own complete unit, with the motor itself positioned at the top and a vertical driveshaft meeting the propeller at the bottom of the unit. The outboard engine is also typically located toward the rear of the boat and can be operated from a console or separate gear. Meanwhile, the inboard motors are placed at the bottom of the deck. The motor is connected to the propeller that is located near the horizontal driveshaft. There are some inboard motors that you can find fixed at the boat’s center, if not toward the rear. This placement means that the inboard motors are more suited for boats of a certain size (not too large) and that they can only be controlled by a dashboard setup or a console.

While some people prefer the inboard motors because they suit the average small boat, many prefer the outboard for its maintenance ease and longevity. Outboard motors are far more easy to maintain or repair due to the fact that they will be placed within a much more accessible area (as opposed to the inboard motors placed toward the bottom of the flight deck). Inspecting the outboard motor is as simple as removing the cowling and observing where the malfunction is taking place. Not only are they easier to maintain, but their life span is typically much longer than the inboard motors. The latter is often placed underwater making it much more susceptible to water damage. In contrast, the outboard sustains less damage, thus giving them longer longevity. In the end, people have their preferences but so long as the differences are noted, both can work just as efficiently. 

At Aviation Purchasing Platform, owned and operated by ASAP Semiconductor, we can help you find all the unique parts for the aerospace, civil aviation, and defense industries. We’re always available and ready to help you find all the parts and equipment you need, 24/7-365. For a quick and competitive quote, email us at sales@aviationpurchasingplatform.com or call us at  +1-714-705-4780.


March 20, 2023

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