1. OPERATION
1-17
IDENTITY tab
The IDENTITY tab is only displayed for CLASS A, CLASS B, SAR VESSEL, SAR AIR-
CAFT and AtoN target types.
SCALE tab
The SCALE tab is only displayed for SAR VESSEL, SAR AIRCRAFT and AtoN target
types.
QUALITY tab
The QUALITY tab is displayed for all target types.
Contents Description
CALL SIGN Target’s call sign. Not displayed for AtoN target types.
IMO NO. Target’s International Maritime Organization registration number.
TYPE OF SHIP Target’s ship type. Displayed only for CLASS A and CLASS B target types.
REAL AtoN Displayed as "YES" for physical aids to navigation, "NO" for virtual aids to nav-
igation. Displayed only for AtoN target types.
TYPE OF AtoN The type of aids to navigation. Displayed only for AtoN target types.
VENDER ID Target’s AIS maker's ID. Displayed only for CLASS B target types.
Contents Description
SHIP SIZE(LENGTH, BEAM) Target’s ship size (length, beam). Displayed for all above target
types.
ANT POSN(X,Y) Position of target’s antenna. Displayed for all above target types.
DRAUGHT Target ship’s draught. Displayed only for CLASS A target types.
PI Off-position indicator. Displayed only for AtoN target types.
Contents Description
PA Position Accuracy for target ship. (HIGH: High accuracy, LOW: Low accuracy.)
RAIM Target’s RAIM status. (USED: Using RAIM, UNUSED: Not using RAIM.).
TIME STAMP Time at which the target was last detected. Not displayed for AIS base stations.
POSN
QUALITY
Target’s position quality. Possible position qualities are shown in the list below:
Quality indication Meaning
[NO POSITION] Position data not available.
[MANUAL POSITION] Position data is input manually.
[DEAD RECKONING POSITION] Position calculated by dead reckoning.
[OUTDATED POSITION > 200 M] More than 200 m from last estimated posi-
tion.
[POSITION > 10 M] Difference of more than 10 m from last es-
timated position.
[POSITION WITH RAIM > 10 M] Difference of more than 10 m from last es-
timated position.
[POSITION < 10 M] Difference of less than 10 m from last esti-
mated position.
[POSITION WITH RAIM < 10 M] Difference of less than 10 m from last esti-
mated position.
[VALID POSN WITH NO TIME
STAMP]
No time stamp available.
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