Ranks in the Austro-Hungarian Navy
The rank insignia of the Austro-Hungarian Navy were worn on and on sleeves for navy jackets and coats, or on shoulder straps of shirts and white jackets. Officers' ranks were indicated by lines of 1.3 centimetres (0.51 in) gold braid as were senior non-commissioned officers' ranks, enlisted men's rank was indicated by white stars on their square collar flaps.
Source: Wikipedia — Ranks in the Austro-Hungarian Navy (CC BY-SA 4.0)