Police said the research vessel the 'Petrel' began to tilt to one side earlier this morning, after it became dislodged on a dry dock.Photo by Jeff J Mitchell/Getty Images A large research vessel tipped over at a dry dock in Scotland on Wednesday, leaving 33 injured. The massive boat once belonged to Microsoft billionaire Paul Allen but is now owned by the US Navy. Officials said gusty winds likely led to the boat becoming dislodged.