3.15.1 The equipment should be capable of operating
in relative and true motion.
3.15.2 The radar origin should be capable of being
off-set to at least 50% and not more than 75% of the radius of the
display.
3.15.3 The radar should be capable of sea and
ground stabilisation. With sea or ground stabilisation the accuracy
and discrimination of the display should be at least equivalent to
that required by this Performance Standard.
3.15.4 Speed and Distance Measuring Equipment
(SDME) providing the ship's speed through the water to the radar should
be capable of providing the speed in the fore and aft direction.
3.15.5 The ground stabilized input should be two-dimensional.
It may be provided from the SDME from an electronic position-fixing
system or from radar tracked stationary targets. The speed accuracy
should be in accordance with the requirements of resolution A.824(19).
3.15.6 The type of input and stabilisation in
use should be displayed.
3.15.7 It should also be possible to input the
ship's speed manually from 0 (zero) knots to 30 knots in steps of
not more than 0.2 knots.
3.15.8 Provision should be made for manual input
of set and drift.