Profile: Konrad Marine, Inc. is a boat propulsion systems manufacturer. We produce products from stern drives for diesel & gasoline powered vessels ranging from water taxis, crew boats, parasail boats to pleasure cruisers and race boats. Our products include konrad 520 stern drive and konrad 520 stern drive. Our products have the power and endurance necessary for fishing vessels, crew boats, water taxis, charters, parasail boats, as well as military applications.