I saw it again many years later and then, after having read many WW2 books, the scene riveted me as I knew exactly what the USS Indianapolis surviors went through. The later scene in the movie (when Quint gets eaten) was then quite ironic. He survived the sharks back then only to be eaten by one thirty years later. Well cinematically, of course.
Just consider this, this old veteran has surely seen the movie “Jaws” ... just imagine what it was like for him to watch that scene...
But Quint was a terrible person. Broken psychologically, so I won’t judge his soul, but smashing the phone on the boat was an act of homicide. Randy Quaid didn’t exist yet, so they had to invent him.