The Transpac race from Long Beach to Honolulu is run every two years, alternating with the Pacific Cup. 2005’s race, the 43rd, got started on July 11th. Position reports from each boat are collected by radio at 9am PDT, are posted on the web by about 1:30pm PDT, and show up here some time after that.
How cool would it be if someone took this data and created a ArcWeb Services application that had even more data in it such as weather? Heck ESRI should just do it as an example and post the code. A very nice mashup indeed.