Twin Disc

Twin Disc is a global leading force in marine parts and propulsion systems. For nearly a century, Twin Disc has designed, built, and serviced countless marine products across the world. Their extensive array of marine management products provides customers with the ultimate edge in performance, control, and reliability.

Notably, Twin Disc manufacturing has pioneered over 100 heavy-duty marine powershift transmissions that range from 35 to over 4000 horsepower. Featuring helical gearing for sound-dampening operations, hydraulics and oil-cooled clutches, Twin Disc transmissions are engineered for smooth, fast shifting efficiency. From the smallest of pleasurecraft to the largest of commercial boat applications, Twin Disc marine transmissions has the precise application to fit your desired horsepower.

Advantage Twin Disc

  • Boosted overall performance
  • Increased productivity
  • Increased operating efficiency
  • Cost-effective
  • Full power forward & reverse
  • Minimal external plumbing
  • Available down angle output
  • Fast and smooth shifting

Product Range

Pleasure Duty

For crafts that use 80% of full engine throttle or less and run up to 500 hour/year. These marine transmissions are used in a long range of pleasure cruisers, non-charter, and non-racing crafts.


Light Duty

For vessels with relatively low hour usage (less than 1,500/year) where full throttle operation is 2 hours out of 12. Typical applications include planing hull vessels such as fire boats, sportfish charters, customs, and patrol boats.


Intermediate Duty

Transmissions categorized for vessels with hour usages up to 2,000 hours/year with 50% of the operating time at full throttle. Typical applications include planing hull vessels such as ferries, fishing boats, displacement hull yachts, and some bow and stern thruster applications.

Medium Duty

For boats with hour usage up to 4,000 hours/year with up to 80% operating time at full engine power. This classification is for usage where some variations in engine speed/power occur as part of normal vessel operation. Typical applications include mid-water trawlers, crew/supply boats, ferries, and some inland water tow boats.

Continuous Duty

For use in continuous operation with little or no variation in engine speed/power settings. Typical vessels include fishing trawlers, tow/tug boats and ocean going vessels.