CoastalUS - HYDROPACMessages3175/25(75)3175/25(75)SÉCURITÉArchivedReceived: 1 Dec 2025, 00:00Archived: 4 Dec 2025, 07:01Updated: 6 Nov 2026, 15:01SubscribeCopyShareShow on mapPrintExportSearchKeywordsOperationsUNDERWATER OPERATIONSMessage contentGREAT AUSTRALIAN BIGHT. AUSTRALIA. DNC 05. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY VESSEL SEA1 AMETHYST IN 38-42.40S 142-57.50E. ONE MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 2813/25(63).Location mapOpen on the full mapMore from US - HYDROPAC3230/262026-11-06BAY OF BENGAL. INDIA. 1. HAZARDOUS OPERATIONS 0030Z TO 1030Z DAILY 08 THRU 15 NOV IN AREAS BOUND BY: A. 17-58.90N 084-11.70E, 17-49.50N 083-59.60E, 17-49.50N 084-15.70E, 17-58.90N 084-3229/262026-11-06BAY OF BENGAL. INDIA. PARTIALLY SUBMERGED WRECK IN VICINITY 15-26.00N 080-14.00E AT 050405Z NOV.3228/262026-11-06ARABIAN SEA. INDIA. 1. CABLE OPERATIONS IN PROGRESS UNTIL 15 NOV BY M/V MT RAAJ 1, AND UNTIL 21 NOV BY M/V LADY GRACE AND M/V DB MARINE 1, ALONG TRACKLINE JOINING 19-03.45N 072-40.64E, 1799/25(22)2025-03-28archivedEASTERN SOUTH PACIFIC. CHILE. DNC 07. ARICA RADIO 18-29.10S 070-19.16W DSC MF SERVICE OFF AIR.3053/262026-10-21archivedCORAL SEA. SOLOMON ISLANDS. 1. CABLE OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V LAYLA ALONG TRACKLINE JOINING 13-06.14S 161-11.58E, 12-23.69S 162-08.91E, 11-43.41S 163-07.90E, 10-50.9Later warnings3173/25(97)2025-12-01archivedWESTERN NORTH PACIFIC. EAST CHINA SEA. SEA OF JAPAN. JAPAN. DNC 23. 1. MOJI NAVTEX STATION (H) 34-00.90N 130-56.10E OFF AIR 012330Z DEC UNTIL FURTHER NOTICE3171/25(63)2025-12-01archivedANDAMAN SEA. INDIA. DNC 03. 1. HAZARDOUS OPERATIONS 0830Z TO 1030Z 04, 11 AND 18 DEC IN AREA BOUND BY 13-00.00N 093-40.00E, 13-00.00N 094-10.00E, 12-53174/25(62)2025-12-01archivedPERSIAN GULF. QATAR. DNC 10. 1. PIPELINE OPERATIONS 02 DEC THRU 15 JAN 26 BY DERRICK BARGE 30 IN AREA BOUND BY 26-23.52N 052-13.83E, 26-24.67N 052-14.99E,Earlier warnings3170/25(74)2025-12-01archivedEASTERN INDIAN OCEAN. DNC 04. 1. HAZARDOUS OPERATIONS, SPACE DEBRIS 040800Z TO 041400Z DEC IN AREA BOUND BY 11-22.00S 107-04.00E, 18-33.00S 107-56.00E,3166/25(75)2025-12-01archivedGREAT AUSTRALIAN BIGHT. AUSTRALIA. DNC 05. CANCEL HYDROPAC 2790/25 AND THIS MSG, OPERATIONS COMPLETED.3164/25(63)2025-11-30archivedEASTERN INDIAN OCEAN. DNC 03. 1. DERELICT 122 METER VESSEL ADRIFT IN VICINITY 03-02.00N 078-03.00EA AT 291330Z NOV. 2. CANCEL THIS MSG 031106Z DEC 25.Back to messages