A wheelhouse is deemed to be specially arranged for steering on radar by one person if it fulfils the conditions of this Chapter.
General design conditions
The wheelhouse must be designed to accommodate a seated steersman.
All appliances, instruments and controls must be so arranged that the steersman can use them conveniently during the voyage without leaving his seat and without losing sight of the radar screen. ...
Radar equipment and speed of rotation indicator
The radar screen must not be substantially off the steersman's line of vision when he is in the normal position at the wheel.
The radar image must remain fully visible, without the aid of a mask or screen, irrespective of the lighting conditions prevailing outside the wheelhouse.
A speed-of-rotation indicator must be installed directly above or below the radar screen.
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