bow thruster

bow thruster (plural bow thrusters)

1. a propulsion unit mounted in or on the bow of a vehicle
2. (nautical) a sideways pointing thruster mounted in a tunnel in the bow or under the bow in a pod, for increased maneuverability
3. (aviation) a fixed or adjustable direction propeller unit mounted on the bow of an airship for increased maneuverability

• azimuth thruster