RedactedNarrative: Operator of vessel #1 attempted to pull in close to the dock to moor and struck something submerged in the water puncturing the pontoon on the port side. The vessel took on some water, but then became stable. No injuries were reported. Inexperience was deemed a factor because Vessel operator being an inexperienced boater realized too late that there was nothing to grab onto when she was maneuvering to dock causing the vessel damages.;