Andrew 'Bart' Simpson, 36, won gold at the 2008 Beijing Olympics and silver in last year's Games in London, both in the Star class.
Born in Chertsey, Surrey, he started sailing at the age of six with his father in Christchurch, Dorset, according to Tyler Sports Management.
Nicknamed Bart, he was awarded an MBE in the 2009 New Year Honours list.
A Foreign Office spokesman said it was aware of reports of the death of a British citizen and had contacted its counterparts in the United States.
More top news
A couple in North Tyneside have seen off an intruder believed to be armed with a machete.
The SNP Party conference is, according to its press office, 'the hottest ticket in town'.
The Tories know the NHS is a weak spot for them, so why did the Prime Minister choose to focus on the issue today?