On 07/15/2013, at about 4:18 p.m. this vessel was cruising on Lake Washington near Marina Park.  The operator was arriving at the Marina Park Marina.  As he slowed, the low profile of the bow, choppy waters, and passenger load/placement created a situation where three waves filled the bow of the boat.  The boat became unstable and eventually rolled over.  The vessel sunk a short moment later.  This occurred 78 feet off the end of the middle dock. 

No injuries or fatalities. 
There was no apparent alcohol involvement. 
The vessel was a total loss with damages estimated at $10,000. 
No one on board the vessel was wearing a PFD. 
The operator did not have a mandatory Boater Education Card. 
There were no Rules of the Road Violations.
Kirkland