RedactedNarrative: A rental pontoon operated by OPERATOR 1 was towing a tube with two minors onboard the tube. OPERATOR 1 stated that he hit a submerged object while on plane. OPERATOR 1 stated that the pontoon began to list to the starboard and he then navigated the vessel to shore. OPERATOR 1 stated that he then called the marina as the pontoon began to list even more. Taylorsville Lake Marina contacted me to go check on the pontoon. Officers arrived at the accident site to find the pontoon sideways against the shore and listing heavily. I instructed all persons onboard to put on a PFD as we came alongside. We took all seven persons on to our vessel and transported them to the marina. A marina employee came out and towed the pontoon back to the marina where marina employees took it out of the water on a trailer. The pontoon sustained damage to the starboard tube at the front section with a large gash extending back about five feet. The entire starboard tube seemed to be filled with lake water.