JRC JMA-5912-6, Instruction Manual

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COG
Course Over Ground
The direction of the ship's movement relative to the earth, measured
on board the ship, expressed in angular units from true north
CORREL CORRELation
CPA/TCPA The distance to the Closest Point of Approach and Time to the
Closest Point of Approach. Limits are set by the operator and are
related to own ship.
CTW
Course Through Water
The direction of the ship's movement through the water
D
DRIFT
The current velocity for manual correction or the current speed on the
horizontal axis of the 2-axis log is displayed.
E
EBL
Electronic Bearing Line
An electronic bearing line originated from own ship’s position.
ETA
Estimated Time of Arrival
G
Ground
stabilization
A display mode in which speed and course information are referred to
the ground, using ground track input data.
H
HDG
Heading
The horizontal direction that the bow of a ship is pointing at any
instant, expressed in angular units from a reference direction .
HL
Heading line
A graphic line on a radar presentation drawn from the consistent
common reference point to the bearing scale to indicate the heading
of the ship
HSC Vessels which comply with the definition in SOLAS for high speed
craft
H up
Head up
Own ship’s heading line is always pointed to the top center of the
radar display.
I
IMO
International Maritime Organization
Interswitch Unit
A device to switch over two or more radar display units and two or
more scanners.