Spoofing AIS is a common practice. It's not unusual to see a "Warship" on AIS - especially when navigating in crowded areas. Ex: https://www.marinetraffic.com

Spoofing AIS is a common practice. It's not unusual to see a "Warship" on AIS - especially when navigating in crowded areas. Ex: https://www.marinetraffic.com/en/ais/details/ships/shipid:457339/mmsi:369970158/vessel:US%20WARSHIP https://www.marinetraffic.com/en/ais/details/ships/shipid:45... https://www.marinetraffic.com/en/ais/details/ships/shipid:5699175/mmsi:419000000/imo:0/vessel:WARSHIP https://www.marinetraffic.com/en/ais/details/ships/shipid:56...