Looks to me like a typical bottom hull part of a wooden ship built in the Maritimes out of soft wood about 1850 to 1890 era . The pieces to me do not seem to be a large vessel but a trading schooner size. The small copper nails probably means she was copper bottomed which suggests she was large enough to cross the Atlantic to Liverpool or Swansea to get her hull copper bottomed. Thus my guess early Victorian, definitely hull part of a wooden ship, probably other bits of the wreck just offshore.