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undef.net - Station #81
Latitude / Longitude:
37.76° / -122.5°
Elevation:
53 m
Equipment Description:
dAISy
Current Status & Statistics
| Status | ONLINE |
| Availability | 1.9% (41 hours online / 2160 total hours) |
| Reception distance in nautical miles | Average: 8.5 / Max: 14.1 |
| Records received in 1 hour | Distinct Vessels: 5 / Positions: 37 |
| Area Covered | 615 km2 |
Period Statistics
| Period | Availability | Reception Distance | Area Covered |
|---|---|---|---|
| 1 Month | 5.7% | 18 NM | 516 km2 |
| 2 Months | 2.8% | 18 NM | 516 km2 |
| 3 Months | 1.9% | 18 NM | 516 km2 |
| 6 Months | 40.4% | 16 NM | 648 km2 |
| 9 Months | 57.6% | 17 NM | 1025.1 km2 |
Ais Message Type Statistics
| Message Type | Count |
|---|---|
| Total Ais Messages | 14.6 |
| MSG 1,2,3 - Position report - Class A | 11.6 |
| MSG 5 – Ship’s Static and Voyage related data | 0.3 |
| MSG 4 – Base Station report | 1.5 |
| MSG 6,8 – Binary messages | 0.1 |
| MSG 9 – SAR Aircraft position report | 0 |
| MSG 12, 14 – Safety related message | 0 |
| MSG 18 – Class B position report | 0 |
| MSG 19 – Extended Class B report | 0 |
| MSG 24 – Class B Ship’s Static data | 0.1 |
| MSG 21 – Aids-to-Navigation report | 1 |
| MSG 27 – Position report for Long-range applications | 0 |
| Other AIS Messages (AIVD) | 0.2 |
| Other Non-AIS messages | 0 |
| Errors | 0 |
| Inconsistent positions | 0 |