JRC JLR-20 Instruction Manual page 48

4.1.4 Turn Rate Screen
Ship's rate of turn is displayed.
There are two types of turn rate screens (A and B), and they can be cycled between using
with the aid of
Turn Rate Screen A
Turn Rate Screen B
4-4
and keys.
COG:
The bearing is indicated by ▲.
◄ is displayed for port turn.
◄ is displayed for a port turn.
Bow heading line
► is displayed for starboard
turn.
The range can be changed.
(Refer to "5.3.6 System
Settings")
► is displayed for starboard
turn.