Ditchings!
Hi there!
Recently read in an air disaster book that on 2nd May 1970 a DC 9-33 operating on behalf of ALM Dutch Antillean Airlines had to ditch and most pax and all of the crew got out and survived as the aircraft "landed" in one piece and floated for long enough. Unfortunately some of the pax were lost at sea after evacuating.
So there has been a "successful" pax aircraft ditching!
Hope this helps!
FMB