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CPA/TCPA The distance to the Closest Point of Approach/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 High Speed Craft
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 Organisation
IR RADAR Interference Rejector
ISW A device to switch over two or more radar display units and two or
more scanners.
L
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