The sailors aboard the dinghies, skiffs, keelboats and sailboards that will dash across Weymouth Bay and Portland Harbor in the Olympic regatta will be protected by a security force ranging from police on personal watercraft to the Royal Navy's HMS Bulwark.

The HMS Bulwark, a landing platform dock assault ship, lurks a few miles out on the English Channel, serving as a floating command center for the miltary-police-civilian security effort. The ship's crew is monitoring commercial shipping, fishing boats and marine radio channels. It keeps a helicopter in the air at all times.

There were practice races Saturday in the Finn, Star and women's match racing classes. The regatta starts Sunday with two races in the Finn and Star classes and round-robin races in women's match racing.

British star Ben Ainslie, going for his fourth straight Olympic gold medal, appeared unhappy about something as he headed to shore. In December, his outburst at a TV cameraman got him disqualified from the world championships in Australia.

— Bernie Wilson — Twitter http://twitter.com/berniewilson

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