RedactedNarrative: According to the operator and occupant statements, Operator was operating the boat near Lenoir City Park and was turning the boat to the right when it capsized.  He said his speed was 10-20mph.  Both operator and occupant were ejected.   They surfaced and watched as the boat sank stern first.  Operator swam to shore and Occupant stayed in the lake treading water.  Witnesses on the bank heard her scream for help and subject entered the water to rescue Occupant.  He helped her swim to the shore at the park.  Operator indicated in his statement the steering was not responsive just before the capsizing.  Additional witnesses on the bank verbally claimed Operator was operating at a high rate of speed and in a reckless manner though none would provide a written statement.