Above is a link to an interesting website about the vessel on which the Orson Welles-Jess Franco 1964 film version of TREASURE ISLAND was shot. Unfortunately, it was never completed but some scenes were shot in the Alicante harbor.
I've always wondered what happened to the footage they shot. Was it destroyed or even printed? Is it stored somewhere? I also question if any of it was used in the 1972 Andrea Bianchi directed TREASURE ISLAND, also with Welles.
It would have been fascinating if they had completed it. We'd have an Orson Welles film directed by Jess Franco!