JRC JMA-5206 Instruction Manual page 27

SCANNER:
Antenna
SEA:
Sea clutter suppression
SET:
The current direction for manual correction
or the current speed on the horizontal axis of
the 2-axis log is displayed.
SOG (Speed Over Ground):
Speed relative to the ground.
STAB (Stabilization):
Stabilization
TCPA (Time to Closest Point of Approach):
The time to approach the closest point from
own ship.
TM (True Motion):
True motion presentation
A presentation in which own ship and any
other target move depending on their
individual movements.
TRAILS:
Function of displaying tracks of other ships.
TRIAL:
Trial maneuvering
True Vector:
A target's true movement predicted as the
result of entering own ship's direction and
speed.
VRM:
Variable Range Marker
WATER:
Stabilization relative to the water
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