RedactedNarrative: A Boston Whaler 180 Dauntless was found aground on the beach at mosquito point with no persons on board at approximately 1645 hours.  Two boaters had been confirmed to be on the vessel around 1420 hours.  A cooler and empty alcoholic beverage containers where found in the boat.  The investigation did not provide any insights as to how the operator and passenger ended up in the water.  Investigation indicated that the operator and passenger had been drinking at a nearby restaurant prior to the incident.