CoastalHellenic Navigational Warnings - NavwarnsMessages765/26765/26SÉCURITÉReceived 11 Jun 2026, 00:00 UTCArchived 02 Jul 2026, 09:23 UTCCopy textShow on mapSharePrintExportWarning textPositions open on the mapNAVWARN 765/26 SOUTH AEGEAN SEA. SIFNOS ISLAND. FOLEGANDROS ISLAND. SUBSEA OPERATIONS. WILL BE CARRIED OUT BY VESSEL ‘AEGEAS’ FROM 12 JUNE 26 UNTIL FURTHER NOTICE IN POSITIONS: 36 56 24N – 024 45 05E 36 39 57N – 024 51 33E WIDE BERTH REQUESTEDLocation mapOpen on the full mapKeywordswide berth requestedMore 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 warnings763/262026-06-11NAVWARN 763/26 CANCELLATION OF NAVWARN 580/2026 NORTH IONIO SEA. LEFKADA ISLAND.NYDRI PORT. ESTABLISHMENT OF NEW STABLE LIGHTBUOYS. A)MOLE ELBOW GREEN STABLE LI776/262026-06-13archivedNAVWARN 776/26 CANCELLATION OF NAVWARN 775/2026. SOUTH EVWOIKOS GULF. ERETRIA PORT. WHITE – RED LIGHT. IN POSITION: 38 22 59N – 023 47 30E DETACHMENT. UNLIT.779/262026-06-14archivedNAVWARN 779/26 NORTH AIGAIO SEA. THERMAIKOS GULF. NORTH END OF WEST ENTRANCE POTEIDAIA CANAL. RED LIGHT: 40 11 54N – 023 19 24E UNLIT.Earlier warnings758/262026-06-10archivedNAVWARN 758/26 CANCELLATION OF NAVWARN 737/2026. SOUTH AEGEAN SEA. THIRA ISLAND. PORT CONSTRUCTION WORKS. DREDGING OPERATIONS IN PROGRESS. FROM 10 JUNE 2026 UNT754/262026-06-10archivedNAVWARN 754/26 NORTHEASTERN AEGEAN SEA. CHIOS ISLAND. MESTA BAY. NORTHWEST OF ENTRANCE. WHITE LIGHT IN POSITION: 38 18 05N – 025 55 28E UNLIT.750/262026-06-08NAVWARN 750/26 CRETAN SEA. IRAKLEIO HARBOUR. NEW SPECIAL MARKING LIGHT ESTABLISHED. QUICK FLASHING YELLOW LIGHТ X SHAPED ON THE CENTER OF FLOATING PLATFORM FORBack to Hellenic Navigational Warnings - Navwarns