Radio Navigation Warnings

Reference Date Time Group Description Select
1974 NAVAREA I 200/25 221001 UTC Aug 25 NAVAREA I WARNINGS IN FORCE AT 221000 UTC AUG 2025

NAVAREA 1

NAVAREA I 200/25

221001 UTC Aug 25 

                                                1. NAVAREA I WARNINGS IN FORCE AT 221000 UTC AUG 2025:

2025 SERIES: 119, 157, 175, 186, 199, 200.

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 (175/25 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: NAVWARNINGS@UKHO.GOV.UK

2. CANCEL NAVAREA I 193/25.
1964 NAVAREA I 199/25 220500 UTC Aug 25 RIGLIST CORRECT AT 220500 UTC AUG 2025.

NAVAREA 1

NAVAREA I 199/25

220500 UTC Aug 25 

                                                1. RIGLIST. CORRECT AT 220500 UTC AUG 2025.

    SOUTHERN NORTH SEA: 51N TO 55N
    52-07.7N 003-56.4E VALARIS 123 ACP P18-A
    52-36.8N 003-44.3E JB-115 ACP HKW-B
    52-59.0N 002-58.4E HAEVA
    53-00.2N 001-50.2E VALARIS 72
    53-07.1N 002-06.3E ENSCO 92 ACP LEMAN GAS FIELD    
    53-10.3N 003-58.2E SWIFT 10
    53-32.7N 001-21.4E OBANA ACP GALAHAD GAS FIELD
    53-34.8N 002-47.5E SEAFOX 4 ACP CARRACK GAS FIELD
    54-05.7N 003-21.8E WELL SAFE PROTECTOR ACP E17A-A
    54-17.4N 001-20.2E ERDA ACP KILMAR GAS FIELD
    54-34.2N 002-17.6E VALARIS NORWAY ACP CYGNUS GAS FIELD
   
    NORTH SEA: 55N TO 60N, EAST OF 5W
    56-16.5N 003-23.9E NOBLE INVINCIBLE ACP VALHALL 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
    56-54.0N 002-22.8E VALARIS 122 ACP 30/02-WHPA
    57-01.9N 001-57.3E VALARIS 121 ACP SHEARWATER OIL FIELD
    57-09.1N 001-40.5E VALARIS 248 (EX GORILLA VI)
    57-11.6N 001-54.8E VALARIS STAVANGER ACP CULZEAN GAS FIELD
    57-22.5N 001-59.8E NOBLE INNOVATOR ACP MUNGO OIL FIELD
    57-48.9N 004-32.0E MAERSK INSPIRER ACP YME OIL FIELD
    58-18.5N 001-46.4W SAFE CALEDONIA ACP CAPTAIN OIL FIELD
    58-25.1N 001-43.0E NOBLE LLOYD NOBLE ACP SLEIPNER GAS FIELD
    58-42.3N 001-36.7E DEEPSEA ATLANTIC
    58-58.0N 002-17.0E DEEPSEA NORDKAPP
    59-10.5N 002-22.5E COSL PIONEER
    59-15.2N 002-36.1E DEEPSEA ABERDEEN
    59-52.3N 002-34.0E NOBLE INTEGRATOR
    59-53.9N 002-16.0E DEEPSEA STAVANGER
    
    NORWEGIAN SEA: 60N TO 65N, EAST OF 5W
    60-26.4N 003-01.4E DEEPSEA YANTAI
    60-30.3N 002-00.8E ASKEPOTT ACP MARTIN LINGE
    61-08.1N 002-00.9E ASKELADDEN
    61-15.2N 000-44.2E NOBLE PATRIOT
    61-16.5N 002-06.9E COSL PROMOTER
NEW 61-29.2N 002-36.2E COSL INNOVATOR
    61-37.8N 001-29.8E STENA DON
    64-52.0N 007-38.3E TRANSOCEAN SPITSBERGEN
    64-56.8N 006-57.0E TRANSOCEAN NORGE

    SOUTH AND WEST COASTS OF THE BRITISH ISLES
    53-37.9N 003-10.5W IRISH SEA PIONEER ACP LENNOX OIL/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 196/25.
1973 WZ 524/25 191557 UTC Aug 25 CARDINAL BUOYS UNLIT AND AIS INOPERATIVE.

UK Coastal

WZ 524/25

191557 UTC Aug 25 

                                                FORTH. 
MONTROSE SOUTHEASTWARDS.
1. NORTH CARDINAL BUOY 56-35.9N 002-09.5W UNLIT .
2. SOUTH CARDINAL BUOY 56-25.1N 002-14.0W UNLIT AND AIS INOPERATIVE.
3. SOUTH CARDINAL BUOY 56-24.9N 002-07.9W UNLIT.
4. CANCEL WZ 520/25.
1971 WZ 523/25 162018 UTC Aug 25 GMDSS. MRCC ABERDEEN. VHF DSC SERVICE FROM INVERBERVIE SITE OFF AIR.

UK Coastal

WZ 523/25

162018 UTC Aug 25 

                                                GMDSS. 
MRCC ABERDEEN. 
VHF DSC SERVICE FROM INVERBERVIE SITE 56-51.1N 002-15.7W OFF AIR.
1970 WZ 521/25 161045 UTC Aug 25 VIKING. BERYL OIL FIELD. PLATFORM 9/13A-SPM2 FOG SIGNAL INOPERATIVE.

UK Coastal

WZ 521/25

161045 UTC Aug 25 

                                                VIKING. BERYL OIL FIELD. 
1. PLATFORM 9/13A-SPM2, 59-33.2N 001-33.7E, FOG SIGNAL INOPERATIVE.
2. CANCEL WZ 442/25.
1968 WZ 516/25 141230 UTC Aug 25 GMDSS. MRCC SHETLAND. MF R/T AND DSC SERVICES FROM LERWICK SITE UNSTABLE.

UK Coastal

WZ 516/25

141230 UTC Aug 25 

                                                GMDSS.
MRCC SHETLAND.
1. MF R/T AND DSC SERVICES FROM LERWICK SITE 60-08.9N 001-08.4W UNSTABLE.
2. CANCEL WZ 437/25.
1967 WZ 511/25 130530 UTC Aug 25 DOGGER. TRENT GAS FIELD. TRENT 43/24A UNLIT AND ALL NAVAIDS INOPERATIVE.

UK Coastal

WZ 511/25

130530 UTC Aug 25 

                                                DOGGER.
TRENT GAS FIELD. 
1. TRENT 43/24A 54-18.0N 001-39.6E UNLIT AND ALL NAVAIDS INOPERATIVE.
2. CANCEL WZ 429/25.
1965 WZ 509/25 111742 UTC Aug 25 HUMBER. INNER BANK SOUTHEASTWARDS. PLATFORM SOUTHWARK AIS INOPERATIVE.

UK Coastal

WZ 509/25

111742 UTC Aug 25 

                                                HUMBER.
INNER BANK SOUTHEASTWARDS.
1. PLATFORM SOUTHWARK 53-11.0N 002-05.8E AIS INOPERATIVE.
2. CANCEL WZ 428/25.
1962 WZ 503/25 090555 UTC Aug 25 GMDSS. MRCC SHETLAND. MF R/T AND DSC SERVICES FROM COLLAFIRTH HILL SITEOFF AIR.

UK Coastal

WZ 503/25

090555 UTC Aug 25 

                                                GMDSS.
MRCC SHETLAND.
MF R/T AND DSC SERVICES FROM COLLAFIRTH HILL SITE 60-32.0N 001-23.5W OFF AIR.
1960 WZ 501/25 081410 UTC Aug 25 DOGGER. DOGGER BANK B OFFSHORE WINDFARM. W2 BUOY UNLIT.

UK Coastal

WZ 501/25

081410 UTC Aug 25 

                                                DOGGER. 
DOGGER BANK B OFFSHORE WINDFARM.
W2 BUOY 54-53.1N 001-27.3E UNLIT.
1896 WZ 497/25 061700 UTC Aug 25 IRISH SEA. WALNEY EXTENSION WIND FARM. NORTH CARDINAL BUOY UNLIT.

UK Coastal

WZ 497/25

061700 UTC Aug 25 

                                                IRISH SEA.
WALNEY EXTENSION WIND FARM.
1. NORTH CARDINAL BUOY 54-07.9N 003-41.2W UNLIT.
2. CANCEL WZ 415/25.
1954 NAVAREA I 186/25 061600 UTC Aug 25 NORTH SEA. OUTER SILVER PIT. SEISMIC SURVEY IN PROGRESS BY M/V RAMFORM ATLAS.

NAVAREA 1

NAVAREA I 186/25

061600 UTC Aug 25 

                                                NORTH SEA.
OUTER SILVER PIT.
1. SEISMIC SURVEY IN PROGRESS BY M/V RAMFORM ATLAS TOWING 15 X 3150 METRE LONG CABLES IN AREA BOUND BY 54-22N 001-46E, 54-08N 002-47E, 53-50N 002-37E, 54-05N 001-34E. WIDE BERTH OF 1.5 MILES AHEAD AND ABEAM, AND 3 MILES ASTERN REQUESTED. M/V OCEAN MERMAID AND M/V THOR OMEGA IN ATTENDANCE.
2. CANCEL NAVAREA I 185/25.
1953 WZ 495/25 061409 UTC Aug 25 FAIRISLE. DUNNET HEAD LIGHT. RANGE TEMPORARILY CHANGED TO 12 MILES.

UK Coastal

WZ 495/25

061409 UTC Aug 25 

                                                FAIRISLE. 
DUNNET HEAD LIGHT 58-40.3N 003-22.6W RANGE TEMPORARILY CHANGED TO 12 MILES.
1949 WZ 491/25 051432 UTC Aug 25 HUMBER. PLATFORM 49/10A-GROVE UNLIT AND ALL NAVAIDS INOPERATIVE.

UK Coastal

WZ 491/25

051432 UTC Aug 25 

                                                HUMBER.
GROVE GAS FIELD.
PLATFORM 49/10A-GROVE, 53-43.0N 002-51.2E, UNLIT AND ALL NAVAIDS INOPERATIVE.
1948 WZ 490/25 050400 UTC Aug 25 GMDSS. MRCC STORNOWAY. VHF R/T SERVICE FROM DRUMFEARN SITE OFF AIR.

UK Coastal

WZ 490/25

050400 UTC Aug 25 

                                                GMDSS.
MRCC STORNOWAY.
VHF R/T SERVICE FROM DRUMFEARN SITE 57-12.0N 005-48.0W OFF AIR.
1891 WZ 486/25 012205 UTC Aug 25 GMDSS. MRCC ABERDEEN. MF R/T SERVICE FROM GREGNESS SITE OFF AIR.

UK Coastal

WZ 486/25

012205 UTC Aug 25 

                                                GMDSS.
MRCC ABERDEEN.
1. MF R/T SERVICE FROM GREGNESS SITE 57-07.7N 002-03.2W OFF AIR.
2. CANCEL WZ 406/25.
1939 WZ 482/25 310551 UTC Jul 25 FASTNET. NYMPHE BANK WESTWARDS. CABLE OPERATIONS IN PROGRESS BY C/S CALYPSO

UK Coastal

WZ 482/25

310551 UTC Jul 25 

                                                FASTNET.
NYMPHE BANK WESTWARDS.
CABLE OPERATIONS IN PROGRESS BY C/S CALYPSO ALONG LINE JOINING 51-51.6N 007-47.9W, 51-47.7N 007-44.8W, 51-39.2N 007-50.4W, 51-14.6N 007-36.9W, 51-09.1N 007-33.7W.
1937 WZ 480/25 301942 UTC Jul 25 HUMBER. DAVY GAS FIELD. PLATFORM 49/30A UNLIT AND ALL NAVAIDS INOPERATIVE.

UK Coastal

WZ 480/25

301942 UTC Jul 25 

                                                HUMBER. DAVY GAS FIELD.  PLATFORM 49/30A, 53-00.3N 002-53.8E UNLIT AND ALL NAVAIDS INOPERATIVE.
1933 NAVAREA I 175/25 240105 UTC Jul 25 NORTH SEA. BERGEN BANK SOUTHWESTWARDS. SEISMIC SURVEY IN PROGRESS BY R/V RAMFORM VICTORY.

NAVAREA 1

NAVAREA I 175/25

240105 UTC Jul 25 

                                                NORTH SEA. 
BERGEN BANK SOUTHWESTWARDS.
SEISMIC SURVEY IN PROGRESS BY R/V RAMFORM VICTORY TOWING 12 X 7500 METRE LONG CABLES IN AREA BOUND BY 60-00N 001-50E, 59-52N 002-44E, 59-09N 002-17E, 59-17N 001-24E.
WIDE BERTH OF 3 MILES AHEAD AND ABEAM AND 5 MILES ASTERN REQUESTED.
R/V RIG ANDROMEDA AND R/V 7 WAVES IN ATTENDANCE.
1932 WZ 466/25 221535 UTC Jul 25 THAMES. EAST ANGLIA ONE WIND FARM. TURBINE A03 FOG SIGNAL INOPERATIVE.

UK Coastal

WZ 466/25

221535 UTC Jul 25 

                                                THAMES.
EAST ANGLIA ONE WIND FARM.
1. TURBINE A03, 52-09.3N 002-27.7E, FOG SIGNAL INOPERATIVE.
2. CANCEL WZ 382/25.
1904 NAVAREA I 157/25 021235 UTC Jul 25 SOUTHERN, SOUTHEASTERN, CENTRAL AND NORTHERN BALTIC, GULF OF FINLAND, GULF OF RIGA AND SEA OF AALAND. GNSS, AIS, RADAR AND DGPS INTERFERENCE OBSERVED.

NAVAREA 1

NAVAREA I 157/25

021235 UTC Jul 25 

                                                SOUTHERN, SOUTHEASTERN, CENTRAL AND NORTHERN BALTIC, GULF OF FINLAND, GULF OF RIGA AND SEA OF AALAND.
1. GNSS, AIS, RADAR AND DGPS INTERFERENCE OBSERVED WITHIN THE AREA.
MARINERS ADVISED TO EXERCISE CAUTION AND BE PREPARED FOR DISRUPTION TO NAVIGATION.
2. BALTIC SEA NAVIGATION WARNING 026/25 REFERS.
1846 NAVAREA I 119/25 161016 UTC May 25 NORTH SEA. SAFETY ZONE ESTABLISHED.

NAVAREA 1

NAVAREA I 119/25

161016 UTC May 25 

                                                NORTH SEA.
TRITON OIL FIELD. 
CHART GB 273.
SAFETY ZONE, RADIUS 500 METRES, ESTABLISHED IN 57-03.11N 000-56.63E.