Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications. Output shaft thrust bearing designed to take maximum propeller thrust. Fully works tested, reliable, sea water resistant, simple to install, compact and space saving design. Manufacture, design and quality control standards comply with ISO 9001.