AIS Message Definitions

AIS Message: whalenotice (366:63:1)

Description:

Endangered whale notification binary message

Note:LNG terminal project. This is a draft. Please comment on the content of this message

Name NumberOfBits ArrayLength Type Units Description
MessageID 6 uint AIS message number. Must be 8
RepeatIndicator 2 uint Indicated how many times a message has been repeated
0: default
3: do not repeat any more
UserID 30 uint Unique ship identification number (MMSI)
Spare 2 uint Reserved for definition by a regional authority.
dac 10 uint Designated Area Code - 366 for the United States
fid 6 uint Functional IDentifier - 63 for the Whale Notice
efid 12 uint Extended Functional IDentifier. 1 for the Whale Notice (dac+fid+efid defines the exact message type)
numreports 2 uint Number of detection reports filled out in this message
stationid1 8 uint Identifier of the station that recorded the whale. Usually a number.
time1_day 5 uint Time of most recent whale detection. UTC day of the month 1..31
time1_hour 5 uint Time of most recent whale detection. UTC hours 0..23
time1_min 6 uint Time of most recent whale detection. UTC minutes
center1_longitude 28 decimal degrees Center of the detection zone. East West location
center1_latitude 27 decimal degrees Center of the detection zone. North South location
timetoexpire1 16 uint seconds Seconds from the detection time until the notice expires
0: No detection/notice active in region
radius1 16 uint m Distance from center of detection zone (lat/lon above)
stationid2 8 uint Identifier of the station that recorded the whale. Usually a number.
time2_day 5 uint Time of most recent whale detection. UTC day of the month 1..31
time2_hour 5 uint Time of most recent whale detection. UTC hours 0..23
time2_min 6 uint Time of most recent whale detection. UTC minutes
center2_longitude 28 decimal degrees Center of the detection zone. East West location
center2_latitude 27 decimal degrees Center of the detection zone. North South location
timetoexpire2 16 uint seconds Seconds from the detection time until the notice expires
0: No detection/notice active in region
radius2 16 uint m Distance from center of detection zone (lat/lon above)
stationid3 8 uint Identifier of the station that recorded the whale. Usually a number.
time3_day 5 uint Time of most recent whale detection. UTC day of the month 1..31
time3_hour 5 uint Time of most recent whale detection. UTC hours 0..23
time3_min 6 uint Time of most recent whale detection. UTC minutes
center3_longitude 28 decimal degrees Center of the detection zone. East West location
center3_latitude 27 decimal degrees Center of the detection zone. North South location
timetoexpire3 16 uint seconds Seconds from the detection time until the notice expires
0: No detection/notice active in region
radius3 16 uint m Distance from center of detection zone (lat/lon above)
Spare2 21 uint Not used. Should be set to zero.