Vessel #1 and vessel #2 both manually propelled rowing shells were on Lake Washington sculling as a training activity.  They were not training together.  

Vessel #1 was sculling in an east direction and vessel #2 was sculling in an west direction on the Montlake Cut, a waterway between Lake Union and Lake Washington, when a collision occurred.  Vessel #2 (going west) was on the south side of vessel #1 (going east), while the operator of vessel #1 had expected vessel #2 to be on the north side.  After the collision the two operators stayed together for 20 minutes until help arrived.

The operator of vessel #2 required treatment beyond first aid for a back sprain and for scrapes and bruises.  There were no damages.
Seattle                       