RedactedNarrative: OPERATOR WAS GOING ABOUT 35 MP WHEN HE HIT A SUBMERGED ROCK WITH HIS PROP.  ONE OF THE FOUR PROPELLERS WAS BROKE OFF FROM THE PROP.  THE PROPELLER AND ALL METAL PIECES ATTACHED TO THE PROP AND RUDDER WERE BENT..  THE PROP WAS PUSHED UP AND CAUSED DAMAGE TO THE HULL. THE CONNECTING BRACKET ATTACHING THE OUT BOARD ENGINE TO THE VESSEL WAS CRACKED AND BENT.  ALL METAL PIECES ATTACHING THE OUTDRIVE WERE BENT AND DAMAGED