Submarines
Attack submarines (Diesel-Electric)
Type 214 (Papanikolis) LOA 213′ TDISP 1,860 tons submerged (4 active, service since 2010)



Type 209 1100 LOA 177′ TDISP 1,207 tons and 1200 classes LOA 183′ TDISP 1,285 tons (8 built, 7 active, service since 1971) one unit HS Okeanos S-118 has been upgraded with Air Independent Propulsion (AIP) and lengthened to about 203′