Recently, I viewed a number of boating videos that featured people looking for increased performance. There were a variety of points made, but propellers were the leverage point most commonly cited. As you know, propellers come in a variety of diameters and pitches. And there can be one prop or two on each shaft. In addition, on a Mercruiser Bravo 3 the gearcase points backwards, while on the Volvo IPS, the gearcase (and props) face forward. It’s safe to say there are a lot of hydrodynamic engineering factors to consider to optimize the performance of a boat. Many boats featured [...]