Version 2013-08-28
VHF channel reserved for the chasing boats has been indicated.
Added information for the endurance task.
Changed points repartition for the tow and cooperation task to put more points on the towing part.

Version 2013-08-23
The journal paper can be now around 5 pages and can be provided during the competition instead of 7 days before.
Clarified formula for the station keeping task.
Corrected typo in the formula for the accuracy task.
Corrected formula for the down/up/sidewind tasks to divide by sqrt(overall hull length) instead of multiply.
The approximate length of the 2 routes for the endurance and measurements task on a long distance have been indicated.
Minor changes and clarifications in the immobile obstacle avoidance task.