CoastalHellenic Navigational Warnings - NavwarnsMessages365/26365/26Received 13 Mar 2026, 00:00 UTCArchived 31 Oct 2026, 12:08 UTCCopy textShow on mapSharePrintExportWarning textPositions open on the mapNAVWARN 365/26 RODOS SEA. CHALKI ISLAND. ONE (1) LIGHTBUOY INSTALLED MARKING UNDERWATER SEWAGE DISPOSAL PIPELINE OF CHALKI ISLAND. QUICK FLASHING YELLOW LIGHTBUOY FOCUS HEIGHT: 1.50M SIXTY (60) QUICK FLASHES PER MINUTE LUMINOUS RANGE: THREE (3) NAUTICAL MILES IN POSITION: 36 12 54N – 027 36 26ELocation mapOpen on the full mapMore 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 warnings366/262026-03-13NAVWARN 366/26 NAVWARN 925/2020 CANCELED. THRAKIKO SEA. THASOS ISLAND.SHALLOW WATERS DUE TO ALLUVIONS. IN PSN: A) 40 37 29N – 024 34 22E (LIMENARIA) B) 40 37 25360/262026-03-13NAVWARN 360/26 NAVWARN 210/2026 CANCELLED. PAGASITIKOS GULF. AGISTRI POINT.ΕDGE OF UNDERWATER PIPE. LIGHTBUOY WITH YELLOW FLASHING LIGHT OPERATIONAL IN NEW POSI372/262026-03-14archivedNAVWARN 372/26 SOUTH EASTERN PELOPONNESE LACONIAN GULF. EXERCISES BY HELLENIC NAVY. FROM 151500Z MAR 26 TO 151500Z SEP 26 IN AREA BOUNDED BY: 36 40 42N – 022 40Earlier warnings351/262026-03-11NAVWARN 351/26 CANCELLATION OF NAVWARN 347/2026 GLYFA FTHIOTIDAS TWO (2) NEW LIGHTS INSTALLED MARKING THE AREA OF FISHING SHELTER 1) WINDWARD MOLE HEAD OF FISHI345/262026-03-10NAVWARN 345/26 ΤΗΕRMAIKOS GULF. VESPASIANOS 2. EASTERN LIMIT OF T.S.S GREEN LIGHT IN POSITION : 40 30 48N – 022 48 42E UNLIT.343/262026-03-09NAVWARN 343/26 MALIAKOS GULF. STYLIDA CHANNEL. UNDER CONSTRUCTION DREDGING WORKS FROM 09 MARCH 2026 DAILY FROM 0430Z UNTIL 1700Z IN THE AREA BOUNDED BY: 38 54 2Back to Hellenic Navigational Warnings - Navwarns