A month or so back I did a very long and nerdy post about the sinking of the Titanic (having just read Walter Lord's famous account of the disaster, A Night To Remember). I mentioned in passing a childhood recollection of this cartoon by Bill Tidy, one of the mainstays of Punch magazine in the '60s and '70s. As a result of exchanges in the comment thread there, a friend helped me track it down online.
Curiously, the cartoon is not at all as I remembered it. The gag is the same, but the drawing completely different. I wonder whether it is my memory playing tricks on me, or if Bill Tidy was adapting an earlier cartoon.