With giant new high-tech boats, the America’s Cup crews have to work hard just to keep the vessels afloat. Danger is always lurking during races in San Francisco Bay.
Oracle Team USA, foreground, sails ahead of Emirates Team New Zealand in an America’s Cup race. The boats have a multihull design meant to minimize contact with the water; less contact allows the boats to go faster. (John G. Mabanglo / EPA)