A direct-drive inboard propulsion system positions the engine in the center of the hull with the propeller shaft directly connected. In contrast, a V-drive system places the engine at the rear of the boat, transmitting power forward to a transmission. This transmission then redirects the power 180 degrees back to the propeller shaft. This configuration gives the boat a “V” shaped drivetrain. One example of its use is in ski boats, where it’s valued for its ability to create a larger wake.
Positioning the engine aft provides several advantages. It concentrates weight in the stern, which helps elevate the bow and improve the hull’s attitude for watersports. The transmission’s location reduces the shaft angle, leading to greater propulsive efficiency and reduced drive-line vibrations compared to direct-drive systems. Furthermore, the V-drive design frees up valuable midship space, allowing for enhanced passenger seating and storage. Historically, V-drives were prominent in early planing hull designs and continue to be favored in specific applications where their performance characteristics shine.