CoastalHellenic Navigational Warnings - NavwarnsMessages1469/251469/25SÉCURITÉReceived 30 Nov 2025, 00:00 UTCArchived 31 Oct 2026, 12:08 UTCCopy textShow on mapSharePrintExportWarning textPositions open on the mapNAVWARN 1469/25 NORTH AEGEAN SEA. ALONNISOS ISLAND. PATITIRI PORT S. END OF ENTRANCE. RED FLASHING LIGHT IN POSITION: 39 08 29N – 023 52 01E UNLITLocation 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 warnings1477/252025-12-02NAVWARN 1477/25 KYKLADES ISLANDS. NAXOS ISLAND. NAXOS MARINA Ν.MOLE HEAD FLASHING RED LIGHT: 37 06 14N – 025 22 25E UNLIT.1478/252025-12-03archivedNAVWARN 1478/25 CANCELLATION OF NAVWARΝ 1450/20251481/252025-12-04archivedNAVWARN 1481/25 CANCELLATION OF NAVWARΝS 1379/2025, 1453/2025, 1470/2025.Earlier warnings1461/252025-11-28NAVWARN 1461/25 SARONIKOS GULF.ELEFSINA GULF. ELEFSINA HARBOUR E. MOLE HEAD GREEN LIGHT IN POSITION: 38 02 07N – 023 32 11E UNLIT1429/252025-11-22NAVWARN 1429/25 APRAOS BAY HMEROLIAS, CORFU ISLAND, MOORING BUOY DETACHED. CONNECTED TO A CHAIN SECTION OF 20 METERS IN LENGTH STABILIZED IN POSITION: 39 45 25N1436/252025-11-22archivedNAVWARN 1436/25 CRETAN SEA. CRETE ISLAND. SOUDA BAY AREA. PROHIBITION OF CROSSING BOATS DUE TO ACOUSTIC MEASUREMENT CHECKS. 241700Z – 250400Z NOV 25 251700Z – 2Back to Hellenic Navigational Warnings - Navwarns