RedactedNarrative: Operator of Vessel A was transiting north in the channel and struck Vessel B who was transiting south. Vessel B was struck in the port bow. The operator of Vessel B saw Vessel A approaching and had come to a complete stop. Operator A states he saw Vessel B ahead, but then is not sure what happened. Both vessels A and B reported to have propely operating running lights. No drugs or alcohol were involved. PFDs were aboard both vessels but not used.