Other noise-reducing systems include the Centaflex AGM<ref>CENTA, http://www.centa-uk.co.uk/</ref> and Rubber Design.<ref>Rubber Design, http://www.rubberdesign.nl/</ref>
=== Mechanical V-Drive ===
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.
With a V-drive, there is no reason not to have the engine room fully aft, taking full advantage of the forward hull for accommodation.
== References ==