The Operator (not wearing a lifejacket) and one additional Occupant (wearing a lifejacket) were in Vessel 1 when it capsized, putting both persons into the water.  The mother of Occupant 1 retrieved him from the water; the Operator had trouble swimming and did not make it to shore.

Alcohol involvement is being investigated in this accident.

Note that Operator Inexperience is listed as Primary Contributing Factor based on the fact that, despite a total boating experience of 100-500 hours, the Operator had very limited experience with this particular vessel (0 to 10 hours).
Reno                          