5.9.1 Measurements from own ship (e.g. range rings,
target range and bearing, cursor, tracking data) should be made with
respect to the consistent common reference point (e.g. conning position).
Facilities should be provided to compensate for the offset between
antenna position and the consistent common reference point on installation.
Where multiple antennas are installed, there should be provision for
applying different position offsets for each antenna in the radar
system. The offsets should be applied automatically when any radar
sensor is selected.
5.9.2 Own ship's scaled outline should be available
on appropriate range scales. The consistent common reference point
and the position of the selected radar antenna should be indicated
on this graphic.
5.9.3 When the picture is centred, the position
of the Consistent Common Reference Point should be at the centre of
the bearing scale. The off-centre limits should apply to the position
of the selected antenna.
5.9.4 Range measurements should be in nautical
miles (NM). In addition, facilities for metric measurements may be
provided on lower range scales. All indicated values for range measurement
should be unambiguous.
5.9.5 Radar targets should be displayed on a linear
range scale and without a range index delay.