I'm trying to remember what's the name of a movie i saw when i was a kid. I remember calling the movie Robinson Crusoe. But can't find that movie by that name anywhere, just other Robinson Crusoe movies.

The plot:

A man crashes with a plane to the sea, and finds a deserted island. He finds a sunken submarine where's this ape that becomes his friend. He also finds a girl who belongs to somekinda tribe or something and he names her Friday. I think i remember that he writes letters to his wife every week. and then there's the tribe that is after him and something. I can't remember very well, because i was little when i saw it. But it sounds like a Robinson Crusoe movie to me. But all Robinson Crusoe movies i find from ex. imdb aren't that one.

Please help!