Statutory guidance

VMS reports

Updated 1 January 2021

Your device must transmit position data every 2 hours when at sea.

The unit will send a report when you:

  • power up your vessel
  • power down your vessel
  • switch the in port button on
  • switch the in port button off
  • enter and exit a geozone

The unit will also send a report if the unit:

  • syncs with the server to make sure the unit is working correctly (once every 24 hours)
  • loses its Iridium signal
  • loses line of sight with the satellites – the unit will also start reporting every 2 hours because it will think you have moved
  • has no power for an extended period of time – it will store the reports and will send them when the power is restored and will also send a ‘hello’ report when power is restored