RedactedNarrative: The operator of unit 1 reported (not written verbatim) that he headed south from the channel of Lake Marie to Grass Lake.  It was noted that unit 1 was taking on water.  The SSW 18 mph wind was gusting to 26 mph.  The water was congested with boat traffic creating large wakes as they entered or was leaving the same channel.  The operator had his passenger move to the back of the boat.  Unit 1 went under the water with the amount of water it took on.  Other boaters in the area assisted with unit 1 and the occupants until Lake County PD arrived.  Some belongings and the occupants of unit 1 were helped aboard the police boat and there were no reported injuries.  Electric Harbor towed unit 1 to Captains Quarters were unit 1 was loaded on the boats trailer.  The occupants of unit 1 were transported to Captains Quarter on LC PD boat without incident.