Appendix 4 Format of VMS message position
COMMUNICATION OF VMS MESSAGES TO CAPE VERDE
POSITION REPORT
| Data Element | Code | Mandatory or Optional? | Content |
|---|---|---|---|
| Start record | SR | O | System detail – indicates start of record |
| Addressee | AD | O | Message detail – addressee. Alpha-3 ISO country code |
| From | FR | O | Message detail – sender. Alpha-3 ISO country code |
| Flag State | FS | F | |
| Type of message | TM | O | Message detail – message type ‘POS’ |
| Radio call sign | RC | O | Vessel detail – international radio call sign of vessel |
| Contracting Party internal reference number | IR | F | Vessel detail – unique Contracting Party number (flag State ISO3 code followed by number) |
| External registration number | XR | O | Vessel detail – number marked on side of vessel |
| Latitude | LA | O | Vessel position detail – position in degrees and minutes N/S DDMM (WGS84) |
| Longitude | LO | O | Vessel position detail – position in degrees and minutes E/W DDMM (WGS84) |
| Course | CO | O | Vessel course 360° scale |
| Speed | SP | O | Vessel speed in tenths of knots |
| Date | DA | O | Vessel position detail – date of record of UTC position (YYYYMMDD) |
| Time | TI | O | Vessel position detail – time of record of UTC position (HHMM) |
| End record | ER | O | System detail – indicates end of record |
Character set: ISO 8859.1
Each data transmission is structured as follows:
-
a double slash (//) and field code indicate the start of the message,
-
a single slash (/) separates the field code and the data.
Optional data elements must be inserted between the start and end of the record.