Why, hello there, Mr. Browning
The below NATO image shows the Hellenic Navy Elli-class (Dutch Kortenaer-class) frigate Adrias (F-459) in a passing exercise Italian Carlo Bergamini-class (FREMM-class) frigate Virginio Fasan (F591) northwest of Crete, on 3 June.
Of note, the Greek tin can has a WWII-era Browning M1919 light machine gun mounted just off the bridge wing.
Notably, the Greeks used U.S.-supplied M1919 after World War II, chambered in good ole .30-06 Springfield, alongside M1 Garands.
The Greek Army largely replaced both with 7.62 NATO battle rifles (a blend of FN FALs, HK G3s, and M14s) and similarly-chambered GPMGs (FN MAG 58, MG3, M60) in the 1970s.
However, it looks like the old air-cooled .30-caliber Browning is still around in the Navy.