HMS Trincomalee is the Royal Navy's oldest floating warship - she is at the Historic Dockyard, Hartlepool, England and you can find out more about her on Wiki - https://en.wikipedia.org/wiki/HMS_Trincomalee. A fantastic day out.
If you are in Rochefort, do not forget the Maritime Museum, which is 2 minutes to walk from the Hermione....That goes for me too! One of these days I'm going to hop over to visit the Trincomalee, then go down to the south coast to visit the Victory in Portsmouth. Then cross over to France to visit the Hermione in Rochefort. My idea of a holiday well spent