Which is not usually a problem, except for that great big hunk of machinery (or two) that makes the boat move – the engine. In the case of inboard engines, a considerable amount of cost and effort goes into installing vibration-dampening engine mounts and flexible drive shaft couplings. This is not the case with most outboards – the powerhead is bolted directly to the leg and gearbox, which in turn is attached to the tilt and turn mechanism through a fairly robust steering swivel with little in the way of vibration-absorbing materials.
While that engine is running, you can probably hear it resonating through the boat’s hull. At lower speeds you will also feel the vibration, which will be especially evident to someone sitting on the transom or gunwale
