Interesting catch. My 1980 J30 hull #233 "Cigar" sank in Katrina in the Miami area so this could be it. The year is obviously wrong since J30's weren't made after 1984. Could be that my insurance company is auctioning it off. There was damage to the hull on the rear starboard just above the waterline and the boat sat in the water for about 3 days before it could be salvaged.