Complex sentence: The PS Waverley is the last surviving seagoing paddle steamer and berths at the breakwater when visiting Dunoon, during the Waverley's summer season on The Firth of Clyde.
Split into simpler sentences: The PS Waverley is the last surviving seagoing paddle steamer. It berths at the breakwater when visiting Dunoon during the Waverley's summer season on The Firth of Clyde.