RedactedNarrative: Vessel 2 was anchored near the south shore.  Vessel 2 Operator was fishing from the boat. Vessel 1 was under way at an estimated speed of 18MPH. Vessel 1 Operator was operating the tiller motor from the back of the boat; Vessel 1 Passengers facing the stern of the boat. Vessel 2 Operator stated he was looking at a map and concentrating on his graph to avoid shallow water and did not see Vessel 1 until a second before he collided with it. Vessel 2 Operator jumped from the boat to avoid injury.