The map requires a MANUAL screen refresh in order to show the latest boat location. This may get fixed someday. Sooo, be sure to use the refresh icon "half circle" at the right side of the browser URL line.

Hovering over the red marker will give you the time/date, speed (in knots) and direction(true). Be sure to note how old the track point is. The accuracy of the location is only about 1/4 of a mile, so it may show the location on land if land is nearby(this does not mean the boat was aground). Updates occur at irregular intervals, as this is still a beta system.

Track Boat