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Sea Tow Annapolis - Station #1647

Latitude / Longitude:
38.98° / -76.45°
Elevation:
2 m
Operated By:
Sea Tow MD Central Chesapeake
Equipment Description:
Milltec, Yagi, 20m altitude
Current Status & Statistics
Status | ONLINE ![]() |
Availability | 100% (2132 hours online / 2133 total hours) |
Reception distance in nautical miles | Average: 2.8 / Max: 14.6 |
Records received in 1 hour | Distinct Vessels: 82 / Positions: 2421 |
Area Covered | 615 km2 |
Period Statistics
Period | Availability | Reception Distance | Area Covered |
---|---|---|---|
1 Month | 100% | 11 NM | 878.5 km2 |
2 Months | 100% | 10 NM | 706.9 km2 |
3 Months | 100% | 9 NM | 585.8 km2 |
6 Months | 100% | 7 NM | 426.5 km2 |
9 Months | 99.6% | 21 NM | 520.3 km2 |
Ais Message Type Statistics
Message Type | Count |
---|---|
Total Ais Messages | 71.8 |
MSG 1,2,3 - Position report - Class A | 27.5 |
MSG 5 – Ship’s Static and Voyage related data | 1.1 |
MSG 4 – Base Station report | 5.1 |
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 | 12.9 |
MSG 19 – Extended Class B report | 0.1 |
MSG 24 – Class B Ship’s Static data | 3.6 |
MSG 21 – Aids-to-Navigation report | 20.8 |
MSG 27 – Position report for Long-range applications | 0 |
Other AIS Messages (AIVD) | 0.7 |
Other Non-AIS messages | 0 |
Errors | 0 |
Inconsistent positions | 0 |