MarineTraffic displays worldwide AIS data received from a large number of ground stations over VHF radio.

When in range of these ground stations, and when the AIS transmitter is turned on pings should appear on MarineTraffic every few minutes. During more distant crossings we may stop being received.

https://www.marinetraffic.com/en/ais/details/ships/shipid:6793684/mmsi:232031607/imo:0/vessel:HANNAH_PENN