Boaters were in the East River for a 4th of July firework show. All boats were driving down river due to an up river current. Boats were moving downstream and approx. 3-4 knots. 

Vessel 1 was driving at approx. 3 knots down river when V2, driving around 10 knots downriver, struck the starboard stern side of V1. Operator of vessel 2 found to be drinking by NYPD.
EAST RIVER
New York                      