Outboards are positioned up out of the water (hence the name) and take up space off of the stern. Where the engine is located is a major difference between an inboard and an outboard motor. The placement of the engine depends on which type you choose. Now let’s dig into the main differences between inboards and outboards. With both a v-drive and direct drive, the prop is in the same spot underneath the hull. A v-drive engine is located in the stern and is typically found in today’s wake surfing boats. This is typically found in ski boats and offers lots of torque and the perfect weight balance for skiing. A direct drive engine is located in the center of the boat. There are two types of inboards, a v-drive and a direct drive. You are unable to trim the propeller on a true inboard because it’s affixed under the boat. You are able to trim the propeller because it has clearance due to where it’s positioned on the boat. The advantage to an I/O over an inboard is the ability to trim the propeller. To trim an engine means to lift it in and out of the water using controls at the helm. An I/O, or stern drive, is not common on boats that are used for watersports because of where the propeller sits. The propeller for an inboard is tucked underneath the boat whereas the prop for an I/O sticks off of the stern, fully submerged underwater. Where the propeller sits in relation to the engine is the main difference in these two options. This is essentially a car engine and both sit down inside of the boat under an enclosure. As I mentioned, the engine is the same between inboards and I/Os. You might find a fiberglass speed boat with an inboard in the Midwest, but the same boat might have an outboard in the southeast due to the impacts of saltwater. That’s not set in stone, there are exceptions to both.įor instance, the region in which you boat can impact how the dealer orders their inventory and which engines they select. Outboards are typically found on aluminum boats such as pontoons and fishing boats. Inboards are traditionally found in fiberglass boats such as towboats and speed boats. Now that I’ve made that distinction, let’s compare inboard engines to outboard engines. You could say they’re brothers as they are the same type of engine, the only difference is where the propeller is affixed to the boat. You will find that certain boat types only utilize one or the other.įirst let me say that inboards and I/Os, are very similar. As we jump into comparing these engine types, it’s important to know a few facts behind the application of each. Let’s talk about outboards, inboards, and I/OSs (inboard/outboards).
I’m going to explain the three different engine types you will encounter to shed some light on what separates them. How will you decide? Do you know what’s best for your boat? How will this choice impact your day on the water? Depending on what type of boat you’re shopping for, you might have noticed that there are three main engine types to choose from.
If you’re shopping for a new boat, whether you’re in the early stages of searching the internet, or you’re ready to pull the trigger, you might have questions when it comes to the engine.
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