This reminds me of a movie i watched some years back. I think it was a british movie. The heroine lives in some sort of a time warp. The movie begins with the girl going out fishing or something with her friends. They get lost and find an abandoned ship. The heroine sees someone on the ship before they go aboard. Later it is revealed that someone was herself and it a vicious cycle of alternate reality that follows where the girl makes multiple such trips.

An interesting movie but i forgot the title. :)