RedactedNarrative: On 9/5/2011 V1 was traveling west at approximately 5-10 knots within the Caloosahatchee River ICW.  At approximately 1600 hrs V1 took a wave not produced by another vessel against the port side.  As a result of the wave, the port pontoon separated from the structure of the vessel causing vessel to list to the port and capsize.  At which time all occupants donned their PFD's, deployed a visual distress signal, and entered the water. Approximately 30 minutes later a Good Samaritan vessel picked all 4 occupants out of the water and stood by until law enforcement arrived.  V1 deck structure and motor eventually separated from the pontoons and sank.  All occupants were uninjured and returned to shore safely.  V1 structure and pontoons were salvaged.
NameOfBodyOfWater: CALOOSAHATCHEE RIVER
NearestCityTown: FORT MYERS                    