5.14.1 A graphic line from the consistent common
reference point to the bearing scale should indicate the heading of
the ship.
5.14.2 Electronic means should be provided to
align the heading line to within 0.1°. If there is more than one
radar antenna (see 5.35) the heading skew (bearing offset) should
be retained and automatically applied when each radar antenna is selected.
5.14.3 Provision should be made to temporarily
suppress the heading line. This function may be combined with the
suppression of other graphics.