The Heimdal HG Series comprises robust gears commonly used in tugs, fishing vessels, work boats, and other vessels requiring high pull and equipment tolerating hard use in difficult conditions.

Heimdal reduction gears are produced in eight sizes. Each size may be equipped with various ratios adapted to the engine and propeller speed. All sizes have a built-in servo system for connection to a controllable pitch propeller by means of a pull rod. The gears may be delivered with up to three PTO and/or PTI, and are suitable for both diesel-mechanic or dieselelectric drive.