532 different ships have been detected in 6 months. The frequency of different ship types has been summarised in the following picture.
These are the frequencies of DAC FID pairs in AIS Message 6 in data coming over AISHUB. 1586084 messages were recorded and analysed with R. With the pages from Arundale, gpsd and VT-Explorer a guess was made about the content of some of these messages.
Continue reading Frequency of DAC FID pairs in AIS Message 6
Many AIS messages target specific MMSI. This means a Vessel or VTS (Vessel traffic service), or AtoN (Aid to Navigation) targets its messages to a certain MMSI destination. These messages can be binary, ASCII, Acknowledgements, GPS corrections, interrogations or assignment mode commands.
Continue reading How to visualize global ship AIS directed communication?
Interestingly many windfarms in the North Sea report as AToNs.
These are the most reported destinations from 51444 ships (MSSI) (AIS Message 5) as pulled from AISHubs data feed. Interestingly major harbours from the People Republic of China are under represented.
After receiving AIS Type 24, Messages (Static Data Report) of 16085 different MMSIs (ideally Class B ships), the following seem to be the most commonly used Vendor IDs.
Travel distances of Clyde CalMac Ferries
|Name||MMSI||Distance traveled (km)||Daily km traveled||Yearly km traveled||mean daily return crossings|
By logging to a Mysql table all recorded GPS positions, we see the workload that is put on these RoRo ferries.
After logging 13371 Class B Message 24 and 44676 Class B Message 5 AIS messages received from AISHUB including my own AIS feed with my version of aisparser, these are the most common transmitted names. Names were exported to CSV and cleaned for punctuation characters, and unnecessary spaces.
Continue reading Most common ship names