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undef.net - Station #81
Latitude / Longitude:
37.76° / -122.5°
Elevation:
53 m
Operated By:
ampledata
Equipment Description:
dAISy
Current Status & Statistics
| Status | ONLINE |
| Availability | 100% (2160 hours online / 2160 total hours) |
| Reception distance in nautical miles | Average: 44.3 / Max: 258.6 |
| Records received in 1 hour | Distinct Vessels: 40 / Positions: 3279 |
| Area Covered | 2337 km2 |
Period Statistics
| Period | Availability | Reception Distance | Area Covered |
|---|---|---|---|
| 1 Month | 100% | 35 NM | 782.6 km2 |
| 2 Months | 100% | 31 NM | 725 km2 |
| 3 Months | 100% | 27 NM | 667.3 km2 |
| 6 Months | 63.2% | 26 NM | 641.5 km2 |
| 9 Months | 65.1% | 23 NM | 634.3 km2 |
Ais Message Type Statistics
| Message Type | Count |
|---|---|
| Total Ais Messages | 76.8 |
| MSG 1,2,3 - Position report - Class A | 52.8 |
| MSG 5 – Ship’s Static and Voyage related data | 1.1 |
| MSG 4 – Base Station report | 10.5 |
| MSG 6,8 – Binary messages | 0.3 |
| MSG 9 – SAR Aircraft position report | 0 |
| MSG 12, 14 – Safety related message | 0 |
| MSG 18 – Class B position report | 1.8 |
| MSG 19 – Extended Class B report | 0.2 |
| MSG 24 – Class B Ship’s Static data | 0.4 |
| MSG 21 – Aids-to-Navigation report | 9.3 |
| MSG 27 – Position report for Long-range applications | 0 |
| Other AIS Messages (AIVD) | 0.4 |
| Other Non-AIS messages | 0 |
| Errors | 0 |
| Inconsistent positions | 0 |