Complex sentence: The Providence Maritime Heritage Foundation maintains a replica of the "Providence"--which bears the name of the original--that was launched in 1976 and designated in 1992 as the flagship and tall ship ambassador of the state of Rhode Island.
Split into simpler sentences: The Providence Maritime Heritage Foundation maintains a replica of the "Providence", which bears the name of the original. She was launched in 1976 and designated in 1992 as the flagship and tall ship ambassador of the state of Rhode Island.