SPACE WEATHER. SOLAR STORM IN PROGRESS FROM 151800 UTC APR 2025. RADIO AND SATELLITE NAVIGATION SERVICES MAY BE AFFECTED.

1. RIGLIST. CORRECT AT 140500 UTC APR 2025. SOUTHERN NORTH SEA: 51N TO 55N 52-06.5N 003-57.7E VALARIS 123 NEW VLISSINGEN ERDA 53-04.7N 001-53.3E VALARIS 72 NEW 53-31.2N 001-48.0E SEAFOX 4 ACP GALLEON GAS FIELD 53-36.5N 004-12.4E NOBLE RESOLUTE ACP PETROLAND FIELD 53-42.3N 004-53.9E SWIFT 10 NEW 54-02.6N 001-14.1E ENSCO 92 54-04.4N 000-54.9E HAEVA ACP RAVENSPURN NORTH GAS FIELD 54-19.5N 002-56.1E WELL SAFE PROTECTOR ACP D15-FA-1 54-34.2N 002-17.6E VALARIS NORWAY ACP CYGNUS GAS FIELD 54-38.9N 000-46.4E PROSPECTOR 1 NORTH SEA: 55N TO 60N, EAST OF 5W 55-28.8N 005-06.5E SHELF DRILLING WINNER ACP DAN OIL FIELD 55-33.5N 005-08.0E NOBLE REACHER ACP HALFDAN OIL FIELD 56-22.6N 003-16.0E LINUS ACP ELDFISK OIL FIELD 56-32.9N 003-12.8E WEST ELARA ACP EKOFISK COMPLEX 56-41.9N 002-20.2E VALARIS 120 ACP JUDY OIL FIELD 56-42.0N 003-07.1E NOBLE INTEGRATOR ACP FENRIS JACKET UNDER CONSTRUCTION 56-54.0N 002-22.8E VALARIS 122 ACP 30/02-WHPA 57-00.8N 001-50.5E SHELF DRILLING FORTRESS ACP ELGIN GAS FIELD 57-01.9N 001-57.3E VALARIS 121 ACP SHEARWATER OIL FIELD 57-03.1N 000-56.7E COSL INNOVATOR 57-09.1N 001-40.5E VALARIS 248 (EX GORILLA VI) 57-11.6N 001-54.8E VALARIS STAVANGER ACP CULZEAN GAS FIELD 57-18.7N 001-52.5E NOBLE INNOVATOR 57-39.5N 004-57.9E DEEPSEA NORDKAPP 57-48.9N 004-32.0E MAERSK INSPIRER ACP YME OIL FIELD 57-54.9N 000-30.8E PAUL B LOYD JR 58-01.4N 000-13.3E WELL SAFE DEFENDER 58-22.0N 001-32.9E DEEPSEA ATLANTIC 58-25.1N 001-43.0E NOBLE LLOYD NOBLE ACP SLEIPNER GAS FIELD 58-50.6N 002-14.9E NOBLE INVINCIBLE ACP EDVARD GRIEG 59-13.8N 002-33.3E DEEPSEA ABERDEEN 59-14.8N 002-27.8E COSL PIONEER NORWEGIAN SEA: 60N TO 65N, EAST OF 5W 60-22.9N 004-05.9W OCEAN GREATWHITE 60-30.3N 002-00.8E ASKEPOTT ACP MARTIN LINGE 60-58.1N 001-54.6W STENA DON NEW 61-04.9N 002-15.0E ASKELADDEN 61-09.6N 001-06.6E NOBLE PATRIOT 61-20.7N 002-04.3E COSL PROMOTER NEW 61-36.7N 001-32.8E NOBLE ENDEAVOR (EX OCEAN) 64-56.8N 006-57.0E TRANSOCEAN NORGE SOUTH AND WEST COASTS OF THE BRITISH ISLES 53-34.0N 003-27.3W IRISH SEA PIONEER ACP HAMILTON GAS FIELD NOTES: A. RIGS ARE PROTECTED BY A 500 METRE SAFETY ZONE. B. ACP - ADJACENT TO CHARTED PLATFORM. C. FOR RIGS LOCATED NORTH OF 65N, EAST OF 5W, REFER TO NAVAREA XIX WARNINGS OR VISIT WWW.NAVAREA-XIX.NO 2. CANCEL NAVAREA I 80/25.

GMDSS. ENGLAND AND SCOTLAND EAST COAST, INCLUDING THE NORTH SEA AND THE SHETLAND ISLANDS. 1. CULLERCOATS NAVTEX STATION (G) 55-04N 001-28W OFF AIR DAILY BETWEEN 0800 AND 1600 UTC FROM 14 TO 16 APR. 2. BROADCASTS TRANSMITTED FROM PORTPATRICK 54-51N 005-07W. 3. CANCEL THIS MSG 161700 UTC APR 2025.

1. NAVAREA I WARNINGS IN FORCE AT 111000 UTC APR 2025: 2025 SERIES: 45, 68, 74, 77, 80, 82. NOTES: A. TEXTS OF NAVAREA I WARNINGS ISSUED EACH WEEK ARE PUBLISHED IN WEEKLY EDITIONS OF THE ADMIRALTY NOTICES TO MARINERS BULLETIN (ANMB). B. NAVAREA I WARNINGS LESS THAN 42 DAYS OLD (45/25 ONWARD) ARE PROMULGATED VIA ENHANCED GROUP CALL (EGC) AND/OR RELEVANT NAVTEX TRANSMITTERS. C. THE COMPLETE TEXTS OF ALL IN-FORCE NAVAREA I WARNINGS, INCLUDING THOSE WHICH ARE NO LONGER BEING BROADCAST, ARE REPRINTED IN SECTION III OF ANMB IN WEEKS 1, 13, 26 AND 39 AND ARE ALSO AVAILABLE FROM THE UKHO WEBSITE AT: HTTPS://MSI.ADMIRALTY.CO.UK/RADIONAVIGATIONALWARNINGS. ALTERNATIVELY, THESE MAY BE REQUESTED BY E-MAIL FROM NAVAREA I CO-ORDINATOR AT: [email protected] 2. CANCEL NAVAREA I 79/25.

GMDSS. BALTIC SEA AND KATTEGAT. NAVTEX STATION GRIMETON (I) 57-06N 012-23E OFF AIR.

SOUTHERN NORTH SEA. NORTH FORELAND TO OOSTENDE. UNDERWATER OPERATIONS IN PROGRESS BY OSV NAUTILUS ALONG LINE JOINING 51-22.7N 001-26.9E, 51-23.5N 001-33.5E, 51-23.7N 001-38.9E, 51-22.6N 001-43.8E, 51-22.5N 002-12.7E, 51-21.1N 002-17.8E, 51-22.4N 002-27.1E, 51-22.2N 002-32.1E, 51-21.2N 002-34.0E, 51-21.0N 002-44.4E, 51-13.5N 002-53.8E. WIDE BERTH REQUESTED.

SHETLAND ISLANDS NORTHWESTWARDS. CHART GB 1233 (INT 1500). SAFETY ZONES, RADIUS 500 METRES, ESTABLISHED IN: A. 60-58.07N 001-54.61W. B. 60-50.11N 001-48.19W. NAVAREA 1 45/25 SCOTLAND, EAST COAST. CHART GB 1407 (INT 1505). SEAGREEN OFFSHORE WINDFARM 56-36N 001-44W PERIMETER BUOYS PERMANENTLY DISCONTINUED.