Vessel 1 was unoccupied and on a mooring.  Vessel 2 was traveling through the mooring field and passenger 1 noticed oil spilling on the deck on vessel 2.  The operator of vessel 2 left the helm with the boat in gear to tend to the leaking oil container.  Vessel 2 made contact with vessel 1 when the weight shifted to port side of vessel 2 and no operator was at the helm.
Falmouth                      