Popeye is a now member of the U.S. Navy, as shown here. The USA was by now involved in WW2, so most cartoons had some kind of patriotic nod at the time.
All of the other enlisted men are drawn exactly the same.
The drawing shown briefly on Popeye's bicep was a miniature version of a real wartime ad encouraging the purchase of war bonds.
As the ship sails by early on, a cloud salutes it. Patriotic bits were put into wartime cartoons shorts in all types of scenarios.
The officers shown flanking Popeye wear different historical U.S. navy uniforms.