Complex sentence: The wreck of the "Mary Rose" was rediscovered in 1971 and salvaged in 1982 by the Mary Rose Trust in one of the most complex and expensive projects in the history of maritime archaeology.
Split into simpler sentences: The wreck of the "Mary Rose" was rediscovered in 1971. It was salvaged in 1982 by the Mary Rose Trust, in one of the most complex and expensive projects in the history of maritime archaeology.