Boating Glossary: O
Support device for mounting outboard engines that extends aft of the transom.
Internal combustion engine mounted at the transom that incorporates motor, driveshaft and propeller.
The lower unit of a stern-drive motor that houses the drive gears and to which the propeller fastens.
Poles designed to spread out fishing lines and keep them from tangling while trolling.
Over the side of a boat and into the water.