CoastalHellenic Navigational Warnings - NavwarnsMessages503/26503/26SÉCURITÉReceived 15 Apr 2026, 00:00 UTCCopy textShow on mapSharePrintExportWarning textPositions open on the mapNAVWARN 503/26 SOUTH EVVOIKOS GULF.WESTERN COAST. ENTRANCE OF FISHING HARBOUR NORTHWARD ON ROCK WHITE LIGHT: 38 01 42N – 024 00 36E UNLIT.Location mapOpen on the full mapKeywordsUNLITMore from Hellenic Navigational Warnings - Navwarns1390/262026-11-13NAVWARN 1390/26 SOUTH AIGAIO SEA GEOPHYSICAL SURVEY WILL BE CARRIED OUT BY ‘NG SURVEYOR’ FROM 13 NOV 2026 IN THE LINE BETWEEN THE POINTS: 37 44 05N – 023 09 37E 37 41 04N-023 12 22E 37 39 23N – 023 181391/262026-11-13NAVWARN 1391/26 SARONIKOS GULF. FLEVES ISLAND. FIRING EXERCISES FROM 16 NOV 26 ON 1500Z UNTIL 2100Z AND FROM 17, 18 AND 19 NOV 26 ON 0900Z UNTIL 1300Z AND ON 1500Z UNTIL 2100Z NOV 26 IN THE AREA CENTE1393/262026-11-13NAVWARN 1393/26 CANCEL NAVWARN 930/2026. SARONIKOS GULF. PSYTTALEIA ISLAND. SOUTHWEST END OF SUBMARINE PIPLINES OF PSYTTALEIA ISLAND. FLASHING YELLOW LIGHTBUOY IN POSITION: 37 55 22N – 023 34 41E CUT758/262026-06-10archivedNAVWARN 758/26 CANCELLATION OF NAVWARN 737/2026. SOUTH AEGEAN SEA. THIRA ISLAND. PORT CONSTRUCTION WORKS. DREDGING OPERATIONS IN PROGRESS. FROM 10 JUNE 2026 UNTIL FURTHER NOTICE IN THE SEA AREA BOUNDE528/242024-04-14archivedNAVWARN 528/24 SOUTH AEGEAN SEA. PAROS ISLAND. DROPPING OF DREDGINGS FROM 15 APR 2024 UNTIL FURTHER NOTICE. DROPPING OF DREDGINGS ΙΝ AREA BOUNDED BY: 37 04 16N 025 03 33E 37 04 16N 025 03 41E 37 04 10Later warnings505/262026-04-17archivedNAVWARN 505/26 MALIAKOS GULF. STΥLIDA PORT. ESTABLISHMENT OF TEMPORARY LIGHTBUOYS. A) RED FLASHING LIGHTBUOY IN POSITION: 38 53 57N – 022 37 55E FOCAL PLANE: 2512/262026-04-18archivedNAVWARN 512/26 SOUTHEASTERN AIGAIO SEA.KALYMNOS ISLAND.SAFONIDI ISLET.LIGHT IN POSITION: 36 53 12N – 026 55 18E UNLIT.518/262026-04-21archivedNAVWARN 518/26 THERMAIKOS GULF. PORT OF THESSALONIKI. EXECUTION OF HARBOUR WORKS AND ESTABLISHMENT OF LIGHTS MARKING WORK AREA. FROM 21 APRIL 2026 UNTIL FURTHEREarlier warnings500/262026-04-15archivedNAVWARN 500/26 THRAKIKO SEA. ALEXANDROUPOLI 5, 3th STARBOARD SIDE FOR INBOUNDING VESSELS GREEN PILLAR BUOY IN POSITION: 40 48 56N – 025 54 16E UNLIT499/262026-04-15archivedNAVWARN 499/26 THRAKIKO SEA. ALEXANDROYPOLI CHANNEL. RED LIGHT ALEXANDROYPOLI ’12’ SIXTH PORTSIDE FOR INBOUNDING VESSELS IN POSITION: 40 49 50N – 025 54 04E UNL497/262026-04-15archivedNAVWARN 497/26 SOUTH AIGAIO SEA.IOS ISLAND. COMMENCEMENT OF HARBOUR WORKS AND ESTABLISHMENT OF LIGHTS MARKING WORK AREA FROM 20 APRIL 2026 UNTIL FURTHER NOTICEBack to Hellenic Navigational Warnings - Navwarns