I'm looking to develop the following resources. We are interested in tracking seismic vessels as they move around the world. The kml gets new inputs automatically every 3 hours. Any suggestions welcome:
Just adding your .kml into Places will make it look like a series of static placemarks and tracks.
To make it work dynamically you'd have to set up a network link to feed dynamic data into your .kml. It's easy to do that in GE, simply click on the Add button on the top menubar in the Viewer and give it the link. It won't move automatically - you have to refresh the network link to make it update.
Another tool you might consider is the AIS database Search for the ship you want and it'll give you the details and its present position. You can add single ships to My Fleet if you're interested, as you are, in a group of them.
This particular map shows your ship "Sanco Sword", the eastmost of the two small blue ships just north of centre of the map. AIS will provide you with the API data for use in your own software, but how you would tie that in with a network link to make it work in GE, I don't know. And it ain't free...
Edit - Saw the link on your web page - might have figured it out - try this network link. If your website link updates every 3 hours, so should this kmz.
2nd edit Hours later. I placemarked the Geo Caspian and several hours later right-clicked the network link in the Places sidebar and refreshed it. The Geo Caspian in the new version of the .kmz had moved some 3 miles from the placemark, so it seems to work fine.
3rd edit more hours later. Geo Caspian moved another 90 miles, now heading into the estuary at Mumbai. Works well, I'd say.