This new Google Maps mashup is tracking the locations of 50 boats in the Frydenbo Doublehanded 4-day regatta off the west coast of Norway. It started on May 31st. The mashup lets you choose boat locations by class and each info-window displays the speed, course and crew aboard. (More info here) I love mashups that plot real-time locations of moving objects!
Related: Volvo Ocean Race Tracker