Complex sentence: In 1996 an attempt was made to add "New Jersey" to the New Jersey State Register of Historic Places; however the battleship was still owned by the Navy and was not in the State of New Jersey, and as a result the attempt failed.
Split into simpler sentences: In 1996 an attempt was made to add "New Jersey" to the New Jersey State Register of Historic Places. The battleship, however, was still owned by the Navy and was not in the State of New Jersey; as a result the attempt failed.