I saw a mystery-genre movie on TV about 13 people on an ocean liner.  Late 70’s, early 80’s.  The ending scene was a little white statue of a person sinking to the depths.  The idea was that one of the 13 people had no soul so there were really only 12 “souls” on the ship.  There were men’s voices singing at the end, something about “of the tomb” or “of the doomed”.  I think there were murders along the way?  I’ve wanted to see that movie again–I remember it was scary to a much-younger me!