CoastalHellenic Navigational Warnings - NavwarnsMessages637/26637/26SÉCURITÉReceived 13 May 2026, 00:00 UTCArchived 31 Oct 2026, 12:08 UTCCopy textShow on mapSharePrintExportWarning textPositions open on the mapNAVWARN 637/26 KYKLADES ISLANDS. THIRA ISLAND. VLYCHADA MARINA. MARINA EAST MOLE HEAD FLASHING GREEN LIGHT IN POSITION: 36 20 13N – 025 26 10E 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 warnings625/262026-05-13NAVWARN 625/26 IONIO SEA.ETOLOAKARNANIA UNDERWATER PIPE LAYING OPERATION IN PROGRESS FROM 15 MAY 2026 UNTIL FURTHER NOTICE BETWEEN THE POINTS: 38 40 20N – 020 5631/262026-05-13NAVWARN 631/26 FROM MAΥ 13 THE EXISTING CHANNELS: 1) KEFALLINIAS CH 27 FOR WEATHER REPORTS AND NAVWARNS WILL BE REPLACED BY CHANNEL CH 61 RESPECTIVELY. 2) PATRA634/262026-05-13NAVWARN 634/26 NORTH COAST OF KRITI ISLAND. ON AYGO ISLET WHITE LIGHT IN POSITION: 35 36 13N- 025 34 40E UNLIT.Earlier warnings617/262026-05-09NAVWARN 617/26 NORTH IONIO SEA. PAXOI ISLAND. SOUTH BREAKWATER HEAD OF SOUTH ENTRANCE OF PAXOI HARBOUR.RED LIGHT IN POSITION: 39 11 47N – 020 11 18E UNLIT.608/262026-05-08archivedNAVWARN 608/26 MALIAKOS GULF PROHIBITION OF NAVIGATION AND ANCHORAGE FOR BOATS FROM 08 MAY 26 UNTIL FURTHER NOTICE IN THE SEA AREA BOUNDED BY: 38 54 17N – 022 3603/262026-05-05NAVWARN 603/26 NORTHWEST AEGEAN SEA. SITHONIA PENINSULA .AGIOS IOANNIS AREA PLEASURE YACHTS SHELTER NEW LIGHTS ESTABLISHED. A)FIXED RED LIGHT AGIOS IOANNIS ON TBack to Hellenic Navigational Warnings - Navwarns