As the other reviewers have noted, there's not a lot of dramatic value to be had here. But it is fun to see the four main stars (Armstrong, Reeves, Anderson, and Orr, all of whom were ubiquitous in films & TV during the '30s through the '60s) kicking around together. Even more significantly, this little propaganda quicky from 1940, in beautiful technicolor, shows San Diego naval base as it actually was at that time (so does "Dive Bomber," come to think of it, made just a little later by the same studio and with two of the same cast members in it).
The opening and closing scenes featuring the USS Pennsylvania are poignant, however, because that very ship was at Pearl Harbor (in drydock) on 12/7/41. And her only sister ship was the USS Arizona.