![]() Now that you know the basics, consult with your dealer to find what type of power best suits your needs. And, because there is no closed cooling system, an outboard can be used throughout the cold weather months without the cost and inconvenience of winterizing or the danger of freezing. Since all parts of an outboard system are designed for marine use and can be easily flushed, they are generally more corrosion resistant than inboard engines, and, therefore, more suited for saltwater use. However, there's usually only room for smaller swim platforms on both sides of the engine. Since the engine is mounted outside the boat on the transom, interior room is unobstructed. Outboards offer quicker acceleration and higher top speeds than similarly powered sterndrives, but fuel economy may not be as good. If you have a smaller tow vehicle, you can "pack more power" with an outboard. Thank you to for the image used in the article.An outboard has a higher power-to-weight ratio-it's lighter than a sterndrive of similar performance capability. Older outboard engines can sometimes be smoky and noisy. An over sized outboard can pose a risk to the sailboat’s balance. The gas tank may have to be positioned awkwardly, unless the boat is specifically designed to prevent this. Its prop is not very deep in the water, which may result in cavitation when the stern rises up in steep waves. In terms of aesthetic appeal, many boat owners do not like an outboard. The cost of an outboard is cheaper and there are minimal vibrations. There are two types of inboard engines, D-Drive and V-Drive. 1 G Geewest Guest I was told from a sales person at a local marina that the performance on a outboard is WAY better than a inboard I. INBOARD ENGINES Inboard engines are under the deck and out of sight. It is sometimes possible to improve the boat’s steering capability, depending on the engine’s mounting. The main difference between the three is the location of the engine. This helps to reduce the drag while sailing. It is usually possible to raise or till the motor to get the prop out of the water. Removal for replacement is also much easier. Outboards are more easily accessible for repairs and servicing. The basic cost of an inboard engine is considerably higher than an outboard of similar size. The risk of water leaking into the boat may be slightly higher with an inboard engine. Removing the engine for replacement or overhaul can be very costly, and may even require cutting through the fiberglass. The engine is typically mounted in a tight space, which makes it more difficult to work on. The disadvantage of inboards is that they are heavier and tend to slow down the boat. In addition, an inboard engine is better for gas efficiency since it reduces drag (it is not protruding upward). Another benefit is that the prop is lower in the water, which reduces the chances of cavitating in steep waves and considerable water movement. Sailboats with inboard engines usually have higher electrical power and advanced cruising equipment. Inboard does not compromise the boat’s aesthetic appearance because it stays out of sight. The weight of the inboard is low in the hull, which contributes as ballast for enhanced stability. ![]() Inboards are usually diesel engines with lower running and maintenance costs and higher reliability. For a small recreational boat, they are unwieldy, expensive, and more difficult to load. The inboard systems are more appropriate for heavy vessels that require large sized motors. ![]() A good inboard system usually relies upon a separate rudder to facilitate steering. The inboard motors are mounted amidship and drive a propeller shaft that goes through the bottom of the hull. In terms of reliability and efficiency, many seasoned boaters prefer the outboard motor. It is easy to tilt them completely out of the water when not in use. The inboard is better here because it is in the water 100 of the time, while the outboard can be out of the water significantly, depending on the wave. That, however, changes if you are in rough waters. Outboard engines are popular because their mounting position high upon on the transom ensures easy access. The Outboard motor is less powerful and uses more fuel, but at the same time, maneuverability is so much better than with the inboard engine. Your personal preferences may also influence your decision in choosing between inboards versus outboards.ĭifferentiating between Inboards and Outboards Outboard motors are more of a general purpose motor that offers convenient control, replacement, and maintenance. Inboard motors provide superior stability and are ideally suited for offshore, commercial, and some specific water skiing applications. You should choose between an inboard and an outboard motor for your boat depending on your needs.
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