Trying to find a movie, remember very little except … there’s a wife & husband, possibly feuding, on a boat in the ocean somewhere and the wife falls overboard. The husband motors around trying to find her, there are flashbacks to happier times (I think) and at the end the husband finds her in the water and jumps overboard to be with her. Maybe from the 70’s?
Overboard? http://www.imdb.com/title/tt0093693/?ref_=nv_sr_2