Rotary-swing column is a propulsion-steering unit, which is used for transmitting torque from engine to a propeller, reversing direction of rotation of the propeller, reducing rotational speed of the propeller, as compared to rotational speed of the engine crankshaft and for steering of a motor boat.

                                                          Specifications:

Column type	reversible, rotary, swing-out
Transmitted operating power, kW (h.p.)	44 (60)
Maximum thrust of propeller taken up by column:
— during forward motion, kg	300
— during reverse motion, kg	115
Drive shaft-to-propeller speed ratio	1.53
Propeller reversal	through friction, self-locking taper clutch
Oil used	M8-B to ГОСТ 10541-78
Column lubrication	splash-type
Required volume of oil, l	2.5
Input shaft rotational speed, min-1:
— maximum permissible	5000
— when reversing	700 to 900
Column lower reduction gear cooling	forced cooling with outboard water
Column control	manual, remote
Swinging out	manual, with locking at swing-out position
angle of swinging	52°
Movement in horizontal plane, deg	±25
Distance between axis of drive shaft and propeller shaft, mm	530
Direction of propeller shaft rotation винта	counterclockwise
Dry weight, kg	52.5