AIS Communication Graph

AIS directed communications (6,7,10,12,13,15,16)

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.
Here is a list of possible AIS messages.

Looking at the more complete picture of AIS directed communications coming over AISHUB, we get the following graphs, consisting out of messages 6,7,10,12,13,15,16.

Communication Graph
AIS communication Graph with degree (n) of connection sized nodes and MMSI number annotation.

 

AIS Communication Graph
AIS communication Graph with degree (n) of connection sized nodes.
AIS communication Graph
AIS communication Graph
AIS communication Graph
AIS communication Graph, showing the geographic locations of the major hubs.

These stations could be identified as major communication hubs.

Japan
VTS 4310703
VTS 4310703

Netherlands
VTS 2442132
VTS 2444012

Belgium
Base Station 2053504
PVD LOCKS
UFADP

Germany
MO OS WINDFARM

Sweden
2655606

PR China
999028 Yantai VTS
9990163

Cyprus
VTS 2129940

Singapore
560002 SINGAPORE VTIS

Bulgaria
2070618 Danube
2070617  Danube

Japan and China dominate most of the AIS  directed traffic.

Data was analysed over several weeks using an extended self written fork of aisparser and logged in MySQL from AISHUB and analysed in Gephi. The total number of analysed messages was more than a million.