Sea Essay is fitted with an AIS transponder. Her last recorded position can be viewed using a number of external websites. 

If you know what you are doing, the MMSI to look for is 232040996

All of the sites mentioned below seem to be reliant on signals recorded and reported by volunteers living in coastal areas and coverage varies hugely and is not guaranteed.   Consequently, if the vessel you are tracking is not visible one day then that is not necessarily a cause to be alarmed.  Note also that the track is sampled and is not necessarily the exact track the vessel followed.

Some examples:

• You can use a URL such as vesselfinder.com ( https://www.vesselfinder.com/vessels/SEA-ESSAY-IMO-0-MMSI-232040996) to see details of Sea Essay and where she  currently is. 
• Or if you want to see where Sea Essay has been use  this URL to vesselfinder  and then press the button marked ‘TRACK’.
• MarineTraffic.com provides a similar service with a ~3 day track history for free.
• MarineTraffic.com  is also free to use and you may find it has a longer archive / memory so you can go back months if necessary.
• Shipfinder is another one with up to 5 days history if you sign up but coverage is not as good as MarineTraffic.com or vesselfinder

Please let the webmaster know if you are aware of other services. Especially any that display a longer historical record for free or which allow a data download.