Wheels or propellers placed in channels or waterways formed in the ship's side or hull to effect changes in direction by propulsion, the wheels or propellers located in the channels setting in motion a column of water or jet which be reaction changes direction of course.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151, for steering devices in which a mere jet is used without the use of wheels, etc.
SEE OR SEARCH CLASS
440, Marine Propulsion,
40+, for combinations of propulsion and steering wheels in channels, subclasses 53+ and 90+ for screws or wheels in channels or waterways.
