B-9
Appendix B Alert List 
 
 
 
 
 
B.3  Cautions 
 
Message  Explanation 
AIS 95% Capacity 
The target number of AIS has reached 95% of the 
acceptable amount. 
AIS ACT 95% Capacity 
The activation target number of AIS has reached 95% of the 
acceptable amount. 
COG/SOG(invalid) 
There is a format error or a status error of the COG/SOG 
data. 
COG/SOG(not plausible)  The plausibility of COG/SOG data cannot be verified. 
COG/SOG(unavailable) 
The backup COG/SOG data cannot be received or cannot 
be calculated. 
HDOP Exceeded (GPS #n)  The GPS#n precision is deteriorated. 
Heading(invalid)  There is a format error or a status error of the Heading data. 
Heading(not plausible)  The plausibility of Heading data cannot be verified. 
Heading(unavailable)  The Heading data cannot be received. 
Multi Current(invalid)  There is a format error or a status error of the data. 
Multi Current(Unavailable)  The data cannot be received. 
Position Shift  The position of your ship is displayed being shifted. 
Position(invalid)  There is a format error or a status error of the Position data. 
Position(not plausible)  The plausibility of Position data cannot be verified. 
Position(unavailable) 
The backup position data cannot be received or cannot be 
calculated. 
Scanner Rotating  The radar antenna is rotating. 
STW Speed(Invalid)  There is a format error or a status error of the STW data. 
STW Speed(not plausible)  The plausibility of STW data cannot be verified. 
STW Speed(Unavailable)  The STW data cannot be received. 
TIME(invalid)  There is a format error or a status error of the Time data. 
TIME(unavailable)  The Time data cannot be received. 
Trial  It is in trial. 
TT 95% Capacity 
The target number of TT has reached 95% of the acceptable 
amount.