On 07/28/2013, at about 4:00 p.m., these two vessels were operating on the east side of the Columbia River near Howard Amon Park located in Benton county WA. 

V2 was riding with his son on the back of the PWC.  At the time of the incident, father was instructing the operator of V1 to return and secure the vessel to the boat launch.  V1 struck V2 damaging the hull of V2.  The estimated speed at the time of collision was 1-10 mph.   

There was little information available on operator1 other than he was the son of another member of the party on that day. 

No injuries or fatalities. 
There was no apparent alcohol involvement. 
Damage to V1 estimated at $3,300.  Damage to V2 estimated at $1,800. 
PFDs were worn by all involved. 
V2 operator had his mandatory Boater Education Card.  V1 operator unknown. 
It is unclear if there were any Rules of the Road Violations.
Richland