This Monday, July 9, 2012 photo shows the Sierra Rose, a luxury yacht partially submerged at its Tahoe Keys Marina dock in South Lake Tahoe, Calif. Witnesses say the three-story yacht that recently sold for $3.2 million hs sunk in a Lake Tahoe marina. It's not clear what sent the 86-foot Sierra Rose vessel underwater at the Tahoe Keys Marina by Monday morning, although neighbors report hearing the sound of tearing metal Sunday night. (AP Photo/Reno Gazette-Journal, Emerson Marcus)
