RedactedNarrative: On 7/7/2018 at approximately 2320 Hours, FWC recieved a report of a capsized vessel on the C-37 Canal in Polk County near Camp Mack. FWC as well as Polk County Sheriff's Office responded to the call. The vessel was identified as an airboat bearing Florida registration FL 4822 ML. The operator of the vessel stated the airboat had two additional passengers and two dogs tied to the front of the bow during the capsizing. He stated the bow was overloaded with weight and as the vessel entered the large C-37 canal from the Camp Mack passage, it began to take water over the bow. The vessel then rolled over and sank to the bottom of the canal below the surface. The occupants were cast into the water and were only able to unleash one of the dogs tied to the bow before it submerged. Unfortunately, the other dog went down with the vessel and was not able to be saved. The vessel was heading east and changing direction to head south on the C-37 Canal at the time of accident. No human injuries were reported and the vessel was removed the following morning by the operator.