CoastalHellenic Navigational Warnings - NavwarnsMessages413/26413/26Received 26 Mar 2026, 00:00 UTCArchived 31 Oct 2026, 12:08 UTCCopy textShow on mapSharePrintExportWarning textNAVWARN 413/26 NAVWARNS 339/2026. 392/2026 CANCELLEDMore 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 warnings434/262026-04-01NAVWARN 434/26 NORTH EVVOIKOS GULF.STYLIDA CHANNEL. 1ST STBDTSIDE FOR INBOUNDING VESSELS GREEN LIGHT: 38 53 57N 022 37 56E UNLIT433/262026-04-01NAVWARN 433/26 NORTH EVVOIKOS GULF.STYLIDA CHANNEL. 1ST PORTSIDE FOR INBOUNDING VESSELS RED LIGHT: 38 54 00N 022 37 54E UNLIT445/262026-04-03archivedNAVWARN 445/26 NORTH IONIO SEA. LEFKADA ISLAND. EXECUTION OF EXCAVATION WORKS. FROM 06 APRIL 2026 UNTIL FURTHER NOTICE FROM 0500Z UNTIL 1500Z IN THE AREA BOUNDEEarlier warnings409/262026-03-24NAVWARN 409/26 NORTH AEGEAN SEA. THASOS ISLAND. BREAKWATER REPAIR WORKS BY FLOATING CRANE IN FRONT OF HOTEL ALEXANDRA. FROM 25 MAR 26 UNTIL FURTHER NOTICE IN TH400/262026-03-23NAVWARN 400/26 CRETAN SEA. ACTIVATION OF ‘KRITI’ FIRING PRACTICE AREA. SECTOR ‘C’. Α) EVERY WEDNESDAY, THURSDAY, FRIDAY AND EVERY SATURDAY FROM 01 JANUARY TO 14399/262026-03-23NAVWARN 399/26 AEGEAN SEA. ACTIVATION OF ‘NISOS ANDROS’ FIRING PRACTICE AREA. FROM 01 JANUARY TΟ 14 JUNE 2026 AND FROM 16 SEPTEMBER TO 31 DECEMBER 2026. DAILY FBack to Hellenic Navigational Warnings - Navwarns