In addition to compatibility with the AIS standard, the AMW-1103 station implements other capabilities to support military and police ships.
These Secure Mode functions can be used to interrupt standard broadcast communications of AIS messages and/or to enable encrypted communications so that only friendly AIS stations (i.e. other WAIS equipped vessels and base stations sharing the same encryption and password) can decode the information transmitted by the ship. The DSC receiver can be reserved for encrypted communications on a user-specified frequency, if desired.
Secure Mode functions comply with NATO standards (STANAG) 4668 and 4669.