Recreation
Forward Drive
A drive system with dual counter-rotating propellers mounted at the front of the drive unit, tucked safely under the hull, allowing some sterndrive-based boats to wakesurf safely.
Forward Drive is a term from limnology — the scientific study of inland waters. The detailed explanation below covers the definition, why the concept matters to lake water-quality interpretation, and how it intersects with the LakeGrade rubric. Reading Forward Drive alongside the LakeGrade rubric helps make the rubric's structure intuitive — each grading parameter maps directly onto an established limnological concept.
The per-lake pages on LakeQuality always show the specific Forward Drive value for that lake, so you can move from the general concept to the specific lake without leaving the site.
What It Means for Your Lake
Forward drive (such as Volvo Penta's Forward Drive) repositions the propulsion so dual props are mounted at the front of the drive and pull the boat from beneath the hull rather than pushing from aft. This tucks the propellers safely underneath the hull, far from where a wakesurfer rides. Because the props are forward-mounted and under the boat, forward-drive models are considered safe for wakesurfing, unlike conventional sterndrives whose props sit well aft of the transom in close proximity to the rider.
Frequently Asked Questions
What is forward drive?
A drive system with dual counter-rotating propellers mounted at the front of the drive unit, tucked safely under the hull, allowing some sterndrive-based boats to wakesurf safely.
Why does forward drive matter for lake health?
Forward drive (such as Volvo Penta's Forward Drive) repositions the propulsion so dual props are mounted at the front of the drive and pull the boat from beneath the hull rather than pushing from aft. This tucks the propellers safely underneath the hull, far from where a wakesurfer rides. Because th...
Related Terms
An inboard drivetrain in which the engine sits at the stern facing backward and the driveshaft runs forward, placing the propeller safely beneath the hull ahead of the transom—the standard layout for wakesurf boats.
A boat with the engine mounted inside the hull and the propeller exiting under the hull forward of the transom, making it safe for wakesurfing because the rider stays away from the prop.
The set of practices that keep riders away from the spinning propeller, including using only inboard boats and shutting the engine off before anyone is near the stern.
Source: EPA National Aquatic Resource Surveys, 2026.