This snapshot shows a great angle on the big guns of a destroyer or other big Navy ship. Once you look past the size of those guns, you notice the fellow in shorts on his hands and knees…doing something. Even closer inspection reveals a volleyball net being strung and another fellow in shorts standing just next to the superstructure, below the kneeling guy. Busy day on board ship, I guess. :-) I’m going to guess this is in the 1950s rather than the 40s, just by the casual atmosphere.