Complex sentence: At some point following the war, her sunken hulk, lying in shallow river water, was salvaged for its cannon, iron ram, casemate armor, and heavy machinery; the rest, including her ordinance, was left behind until "Neuse" was raised.
Split into simpler sentences: At some point following the war, her sunken hulk, lying in shallow river water, was salvaged of its metals: cannon, iron ram, casemate armor, and heavy machinery. The rest, including her ordinance, was left undisturbed until "Neuse" was raised.