Complex sentence: So many ships have been lost off Cape Hatteras that the area is known as the "Graveyard of the Atlantic"; more than 1,000 ships have sunk in these waters since records began in 1526.
Split into simpler sentences: So many ships have been lost off Cape Hatteras that the area is known as the "Graveyard of the Atlantic". More than 1,000 ships have sunk in these waters since records began in 1526.