The Navy Department caught on pretty early to the power of film, and were probably delighted to take advantage of the opportunity presented by Luke Joins the Navy. With America only a year away from entering The Great War, it was no doubt considered a recruiting boon to have Harold Lloyd and Snub Pollard playing it for laughs aboard a US Navy warship. As only fragments of this comedy are currently available for general viewing, it's hard to give it a fair grade, so I'll split the difference and give it a 5. That said, Luke is not a character I particularly enjoy--I find his moustache particularly galling--but Lloyd and Pollard make the most of their time at sea, and the footage of real sailors (and real warships) is impressive enough.