5.19.1 The heading information should be provided
by a gyrocompass or by an equivalent sensor with a performance not
inferior to the relevant standards adopted by the Organization.
5.19.2 Excluding the limitations of the stabilizing
sensor and type of transmission system, the accuracy of azimuth alignment
of the radar presentation should be within 0.5° with a rate of
turn likely to be experienced with the class of ship.
5.19.3 The heading information should be displayed
with a numerical resolution to permit accurate alignment with the
ship gyro system.
5.19.4 The heading information should be referenced
to the consistent common reference point (CCRP).