RedactedNarrative: Unit 1 was anchored in Bryan Creek and occupied by one individual.  Unit 1 came off anchor due to high winds and a strong current from a king tide.  Unit 1 drifted onto the bank of the western side of the creek before the operator was able to reset the anchor or start the vessel's engine.  As the tide went out the vessel grounded and listed to the starboard side at approx. a 60* angle.  As the tide came back in, water poured over the starboard gunnel, submerging and partially capsizing the vessel.