The key distinguishing feature for this cap is the use of the brass coated steel and enamel star in place of the cockades used by higher ranking naval personnel.Wear of this star/visor combination was abolished in the 1969 uniform regulations when such re-enlisted personnel (and later warrant officers - Michman) were authorized to wear the officer's cockade.A enameled red star (with the white center) was pinned at the top of the badge.This special cap emblem was eliminated in the 1969 regulations.Officer Engineer/Technician Winter Service 1954-1968 A counterpart to the previous cap but made before 1969.
Although the color palette of the Soviet Navy was limited, it did have the widest range of uniform types of any service.
The silver cockade (called a "crab" in Russian) is embroidered from silver wire - heavily tarnished in this case.
These early cockades were very finely crafted from multiple pieces - with separate anchor, twisted wire around that anchor, central two-rimmed cockade with red and white enamel star and a wreath embroidered onto a separate wool backing and then sewn or pinned onto the band.
Note the naval-unique star - with the white circular center surrounding the hammer and sickle.
Naval caps were also unique in that the band was covered with a black ribbon with a distinct top-to-bottom ribbing. To ensure the ribbon stayed on the cap, a raised ridge was sewn around the bottom of the band.