Mackinac race starts Saturday

July 21, 2012 (CHICAGO)

More than 350 boats will parade by Navy Pier then take off in 10-minute increments, starting at 10:30 a.m.

Last year, a boat capsized during a storm and two people died.

As a result of last year's tragedy, changes are in place for this weekend's race.

All competitors must now carry a knife, every boat needs a GPS device and there are new stability requirements for the boats.

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