Stan and Ollie work in a horn factory. Ollie starts having violent fits every time he hears a horn. His doctor prescribes a restful sea voyage. Mayhem ensues.
I vaguely remember first seeing this forty years ago with my parents, when I was very young--especially the set-piece in which they're trying to outwit the murderous escaped criminal on their boat by making a quite inedible meal. Still quite funny two generations later.