=== Mechanical V-Drive ===
[[File:BorgWarnerVDrive.jpg|thumb|250px|left|Borg Warner V-drive
– Graphic with permission © Trans Atlantic Diesel, http://www.tadiesels.com/borg_warner-vdrive.html/]]
A mechanical V-drive is a compact reduction-gear transmission that reverses the direction of the drive shaft. It allows the engine to be placed aft, facing aft, with the output shaft facing forward. The V-drive reverses the direction of the output to connect to the propeller shaft, usually at an angle of 10-15 degrees. Typical manufacturers are: Borg Warner, Halibrand, Twin Disc Marine Transmis-sions, Yanmar, and ZF.