operator and passenger were operating a 2001 yamaha pwc in a cove in welch park on somervile lake during a wind advisory.  both occupants were thrown from the vessel after encountering several high swells.  operator was allegedly not wearing a pfd while the passenger was.  the passenger swam to the operator and gave her his pfd.  the operator was rescued by an unknown passer-by while the passenger was unable to reach the shoreline and drowned.
somerville                    