| Message ID |
6 |
Identifier for Message 8 ; Always 8 |
| Repeat Indicator |
2 |
Used by the repeater to indicate how many times a message has been repeated. |
| Source ID |
30 |
MMSI number of source station |
| Spare |
2 |
Not used. Should be set to zero. |
| IAI |
16 |
DAC = 001
FI = 11 |
| Latitude |
24 |
Measuring position, 0 to + /- 90 degrees, 1/1000th minute |
| Longitude |
25 |
Measuring position, 0 to + /- 180 degrees, 1/1000th minute |
| Date and time |
16 |
Time of transmission, Day, hour, minute, (ddhhmm in UTC) |
| Average wind speed |
7 |
Average of wind speed values for the last 10 minutes. 0-120 kts, 1 kt |
| Wind gust |
7 |
Wind gust is the maximum wind speed value reading during the last 10 minutes, 0 – 120 kts, 1 kt |
| Wind direction |
9 |
0 – 359 degrees ,1 degree |
| Wind gust direction |
9 |
0 . 359 degrees, 1 degree |
| Air temperature |
11 |
Dry bulb temperature – 60,0 to + 60,0 degrees Celsius 0,1 of a degree |
| Relative humidity |
7 |
0 . 100%, 1% |
| Dew point |
10 |
– 20,0 – + 50,0 degrees, 0,1 degree |
| Air pressure |
9 |
800 . 1200 hPa, 1 hPa |
| Air pressure tendency |
2 |
0 = steady, 1 = decreasing, 2 = increasing |
| Horizontal visibility |
8 |
0,0 . 25,0 NM, 0,1 NM |
| Water level (incl. tide) |
9 |
Deviation from local chart datum, . .10,0 to + 30,0 m 0,1 m |
| Water level trend |
2 |
0 = steady, 1 = decreasing, 2 = increasing |
| Surface current speed (incl. tide) |
8 |
0,0 . 25,0 kts 0,1 kt |
| Surface current direction |
9 |
0 . 359 degrees, 1 degree |
| Current speed, #2 |
8 |
Current measured at a chosen level below the sea surface, 0,0 . 25,0 kts, 0,1 kt |
| Current direction, #2 |
9 |
0 . 359 degrees, 1 degree |
| Current measuring level, #2 |
5 |
Measuring level in m below sea surface , . 0 .30 m 1 m |
| Current speed, #3 |
8 |
0,0 . 25,0 knots, 0,1 knot |
| Current direction, #3 |
9 |
0 . 359 degrees, 1 degree |
| Current measuring level, #3 |
5 |
Measuring level in m below sea surface, 0 . 30 m 1 m |
| Significant wave height |
8 |
0,0 . 25,0 m, 0,1 m |
| Wave period |
6 |
Period in seconds, 0 . 60 s, 1 s |
| Wave direction |
9 |
0 . 359 degrees, 1 degree |
| Swell height |
8 |
0,0 . 25,0 m, 0,1 m |
| Swell period |
6 |
Period in seconds, 0 . 60 s, 1 s |
| Swell direction |
9 |
0 . 359 degrees, 1 degree |
| Sea state |
4 |
According to Beaufort scale (manual input?), 0 to 12, 1 |
| Water temperature |
10 |
-10,0 – + 50,0 degrees, 0,1 degree |
| Precipitation (type) |
3 |
According to WMO |
| Salinity |
9 |
0,0 . 50,0 ., 0,1. |
| Ice |
2 |
Yes/No |
| Spare |
6 |
|
| Total Number of bits |
352 |
Occupies 2 slots |
