Bermuda is one of seven nationals in the top 30 fighting for the last five Olympic spots.
The 49er yachties will race nine qualifying races over three days before the top 25 splits into a gold fleet, with another eight races to add to their qualifying scores.
Burling and Tuke were 13th at a warmup regatta in Hyeres, France, and drove the 1300km from France to Croatia towing their boat, taking a small detour through the tight streets of Monaco before a few hours in Venice.
After Croatia they fly home for 14 days, leaving Hansen and Porebski to tow the 49er boats up to Weymouth, the Olympic venue, to prepare for the Sail for Gold regatta, their last warmup event before the London Games.
Meanwhile, at the Laser world championship in Boltenhagen, Germany, Mt Maunganui's Sam Meech is 21st after a 20th and fifth yesterday.