RedactedNarrative: Vessel 1 was sailing outside Portland Harbor.   The sea state was choppy around 3 feet.  The forward stay on the bow broke and one of the cables supporting the mast broke.   The other supporting cables weakened and with the slack sail and sea state, the mast broke from the mount on the deck.  The mast and sail fell aft on the port side of the boat.  When it fell, the passenger who was in the port quarter of the deck, was hit by the sail and aluminum mast.  Passenger 1 sustained a fractured C6 vertebrae and fragments of that slid over to C7 as well a laceration to the scalp requiring 5 staples to close. 