CoastalHellenic Navigational Warnings - NavwarnsMessages381/26381/26Received 17 Mar 2026, 00:00 UTCArchived 31 Oct 2026, 12:08 UTCCopy textShow on mapSharePrintExportWarning textNAVWARN 381/26 NAVWARN 1580/2025 CANCELLED.More 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 warnings382/262026-03-18archivedNAVWARN 382/26 NAVWARN 368/2026 CANCELLED.383/262026-03-19archivedNAVWARN 383/26 NAVWARN 318/2026 CANCELLED.396/262026-03-22NAVWARN 396/26 THERMAIKOS GULF. PORT OF THESSALONIKI. AMMUNITION LOCATED IN POSITION: 40 37 29N – 022 54 16E CAUTION ADVISEDEarlier warnings372/262026-03-14archivedNAVWARN 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 40360/262026-03-13NAVWARN 360/26 NAVWARN 210/2026 CANCELLED. PAGASITIKOS GULF. AGISTRI POINT.ΕDGE OF UNDERWATER PIPE. LIGHTBUOY WITH YELLOW FLASHING LIGHT OPERATIONAL IN NEW POSI366/262026-03-13NAVWARN 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 25Back to Hellenic Navigational Warnings - Navwarns