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Radio Navigational Warnings

We act as the NAVAREA I (NE Atlantic) Co-ordinator for the International Maritime Organization (IMO) and International Hydrographic Organization (IHO) Worldwide Navigational Warning Service (WWNWS) and also as the United Kingdom National Co-ordinator for issuing coastal navigational warnings.

Whilst the UKHO will attempt to keep this site up-to-date by adding and cancelling navigational warnings in real time, for reasons beyond its control, this may not always be possible. The approved method of receiving Maritime Safety Information (MSI) is via the appropriate IMO, Global Maritime Distress and Safety System (GMDSS) broadcast systems as defined by the WWNWS. The provision of navigational warnings on this website is not intended to be a substitute for, or an alternative to, the International SafetyNET service or the International NAVTEX service, and does not relieve Masters/Captains of their responsibility to monitor MSI broadcasts in accordance with the provisions of SOLAS.

Many warnings are of a temporary nature, but others may remain in force for several weeks and may be superseded by Notices to Mariners.

The IHO WWNWS-SC web page allows direct access to all the NAVAREA Co-ordinators around the world who have made their NAVAREA warnings available on the web. To get to the IHO WWNWS-SC web page, click on the “Visit IHO WWNWS” button below.

To switch to a low-graphic/plain text/non-java version, click on the “Simple Text Version” button below.

Information:

The following NAVAREA I and UK Coastal Warnings (WZs) were in force at: 250505 UTC MAY 12
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123/12 * 250500 UTC May 12 * RIGLIST. Correct at 250500 UTC MAY 12.

NAVAREA I
123/12
250500 UTC May 12

 
1. RIGLIST. Correct at 250500 UTC MAY 12.
 
         Southern North Sea: 51 to 55N.
         52-54.5N 003-27.4E   Noble Byron Welliver
         53-10.4N 003-58.2E   Noble George Sauvageau
         53-24.3N 001-47.1E   Ensco 92
         53-54.5N 001-01.1E   Ensco 80
         54-35.7N 000-26.0E   Ensco 70
 
         North Sea: 55 to 60N, East of 5W and the Baltic Sea.
         56-00.2N 003-11.1E   Wilphoenix
         56-12.0N 002-45.9E   Ocean Princess
NEW 56-22.5N 002-22.3E   Maersk Guardian
         56-22.9N 004-14.2E   Maersk Giant
         56-26.4N 002-00.6E   Sedco 704
NEW To Esbjerg                 Maersk Resolve
         56-38.9N 002-29.5E   GSF Galaxy 2
         56-41.8N 002-14.9E   Maersk Resilient
         56-42.0N 003-08.6E   Maersk Gallant
         56-45.1N 001-32.3E   Noble Ton Van Langeveld
         56-45.1N 000-36.9E   Sedco 711
         56-56.9N 002-09.2E   Ensco 101
         57-00.6N 001-51.7E   Sedco 714
         57-36.0N 001-38.6E   Ensco 100
         57-45.0N 001-04.9E   Rowan Gorilla 7
         57-48.4N 001-50.2E   Ocean Nomad
         57-52.1N 000-56.3W  GSF Arctic 3
         57-52.6N 001-37.0E   Rowan Gorilla 6
         58-42.8N 001-37.9E   COSL Pioneer
         59-09.8N 001-37.1E   Paul B Lloyd Jnr
         59-24.2N 002-22.1E   Transocean Barents
         59-32.8N 001-59.2E   Transocean Winner
         59-56.1N 001-33.1E   Rowan Norway
 
         Norwegian Sea: 60N to 65N, East of 5W.
         60-46.1N 003-36.7E   Transocean Leader
         60-49.9N 003-33.7E   Stena Don
         60-54.9N 003-31.4E   Songa Trym
NEW 60-56.7N 003-34.7E   West Venture
         61-02.0N 001-07.6E   Transocean John Shaw
         61-05.9N 002-16.6E   Deepsea Atlantic
         61-06.6N 002-15.6E   West Elara
         61-08.2N 002-00.9E   Songa Dee
         61-18.1N 002-12.3E   Ocean Vanguard
         61-19.7N 003-10.7W   Stena Carron
         61-20.3N 003-57.4E   Transocean Searcher
         61-23.3N 002-08.5E   Bideford Dolphin
         61-27.6N 001-31.6E   Stena Spey
         61-29.8N 001-36.0E   Byford Dolphin
         61-31.8N 001-06.1E   Wilhunter
         61-35.6N 001-57.2E   Songa Delta
         61-42.1N 001-29.6E   Borgsten Dolphin
NEW 61-49.0N 003-35.2E   Scarabeo 8
         62-02.7N 001-30.2E   Bredford Dolphin
         64-21.6N 007-33.0E   Scarabeo 5
         64-48.7N 007-03.4E   Transocean Arctic
NEW To Kristiansund          Borgland Dolphin
 
         South and West Coasts of the British Isles.
         53-37.6N 003-40.3W   Seafox 1
 
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 119/12.

122/12 * 240145 UTC May 12 * IRELAND, East Coast. Baily light range reduced.

NAVAREA I
122/12
240145 UTC May 12

IRELAND, East Coast.
Approaches to Dublin Bay.
Chart BA 1468.
Baily Light 53-21.7N 006-03.1W, range permanently reduced to 18 Miles.

121/12 * 211400 UTC May 12 * ENGLAND, SOUTH COAST. Worthing Southwards. Lit meteorological mast with fog signal established.

NAVAREA I
121/12
211400 UTC May 12

ENGLAND, SOUTH COAST.
Worthing Southwards.
Chart BA 1652.
Meteorological mast Mo(U)15s Aero F.R. Horn Mo(U)30s established 50-41.29N 000-20.59W.

120/12 * 210945 UTC May 12 * NORWEGIAN SEA. Seismic survey by Polarcus Amani.

NAVAREA I
120/12
210945 UTC May 12

NORWEGIAN SEA. 
Chart BA 2182D (INT 1040).
Seismic survey in progress by Polarcus Amani towing 10 x 7300 metre long cables within area bounded by 62-20N, 61-57N, 001-33E  and  002-48E.
5 mile berth requested.
Guard Vessel Alk Explorer in attendance.

118/12 * 200115 UTC May 12 * ENGLAND, SOUTH-WEST COAST. Lands End. Runnel Stone Light-buoy fog signal changed to Whistle.

NAVAREA I
118/12
200115 UTC May 12

ENGLAND, SOUTH-WEST COAST.
Lands End.
Chart BA 777.
Runnel Stone Light-buoy, 50-01.2N 005-40.4W, fog signal changed to Whistle.

117/12 * 181000 UTC May 12 * NAVAREA I WARNINGS IN FORCE AT 181000 UTC MAY 12.

NAVAREA I
117/12
181000 UTC May 12

1. NAVAREA I WARNINGS IN FORCE AT 181000 UTC MAY 12:

2010 SERIES: 317.
2011 SERIES: 203 303.
2012 SERIES: 044 048 057 072 078 084 087 097 098 107 108 109 110 111 113 114 115 116 117.
 
NOTES:
A. Texts of NAVAREA I Warnings issued each week are printed in weekly editions of Admiralty Notices to Mariners.
B. NAVAREA I Warnings less than 42 days old (078/12 onward) are promulgated via SafetyNET 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 available from the UKHO website at:
www.ukho.gov.uk/RNW.
Alternatively, these may be requested by e-mail from NAVAREA I Co-ordinator at:
navwarnings@btconnect.com.
 
2. Cancel NAVAREA I 112/12.

116/12 * 160150 UTC May 12 * NORWEGIAN SEA. Seismic survey in progress by Oceanic Challenger. 4 mile berth requested.

NAVAREA I
116/12
160150 UTC May 12

NORWEGIAN SEA.
Chart BA 4101.
1.Seismic survey in progress by Oceanic Challenger towing 12 x 6000 metre long cables within area bounded by 64-43N 006-19E, 64-43N 007-15E, 64-26N 007-15E, 64-15N 006-58E and 64-15N 006-19E.  4 mile berth requested. Guard vessels Cassandra 5 and Stormbas in attendance.
2. Cancel this message 010100 UTC Sep 12.

114/12 * 132030 UTC May 12 * NORTH SEA. Norwegian Sector. Seismic survey by M/V Geco Triton.

NAVAREA I
114/12
132030 UTC May 12

NORTH SEA. Norwegian Sector.
Chart BA 292.
1. Seismic survey in progress by M/V Geco Triton towing 10 x 2600 metre cables in area bounded by 58-55.6N 002-24.4E, 59-02.3N 002-01.3E, 59-14.3N 002-05.2E, 59-33.4N 002-30.4E, 59-26.3N 002-55.1E and 59-20.2N 002-52.2E. Guard vessel in attendance. Wide berth requested.
2. Cancel this message 232359 UTC Jul 12.

113/12 * 121305 UTC May 12 * ENGLAND, Thames Estuary. Black Deep buoy moved.

NAVAREA I
113/12
121305 UTC May 12

ENGLAND, East Coast.
Thames Estuary. Long Sand Head.
Chart BA 2692.
Black Deep light-buoy moved 3 cables east-north-eastwards to 51-47.92N 001-36.78E.

111/12 * 102325 UTC May 12 * SHETLAND ISLANDS NORTHWARD. Seismic survey in progress by M/V Polarcus Samur.

NAVAREA I
111/12
102325 UTC May 12

SHETLAND ISLANDS NORTHWARD.
Chart BA 2182D (INT 1040).
1. Seismic survey in progress by M/V Polarcus Samur within area bounded by 62-07N 000-28E, 62-10N 000-24W, 61-53N 001-05W, 61-24N 001-48W, 61-24N 000-09W and 61-57N 000-40E. Wide berth requested.
2. Cancel Navarea I 066/12.

110/12 * 091545 UTC May 12 * ENGLAND, EAST COAST. Humber Estuary North-eastwards. Production Platform under construction.

NAVAREA I
110/12
091545 UTC May 12

ENGLAND, EAST COAST.
Humber Estuary North-eastwards.
Chart BA 121.
York Production Platform under construction 53-53.1N 000-25.9E.

109/12 * 090145 UTC May 12 * ENGLAND, SOUTH-WEST COAST. Trevose Head Lighthouse. Fog signal discontinued.

NAVAREA I
109/12
090145 UTC May 12

ENGLAND, SOUTH-WEST COAST.
Charts BA 1149 and 1156.
Trevose Head Lighthouse 50-33.0N 005-02.1W, fog signal permanently discontinued.

108/12 * 090015 UTC May 12 * SCOTLAND, WEST COAST. Isle of Mull westwards. Depths less than charted.

NAVAREA I
108/12
090015 UTC May 12

SCOTLAND, WEST COAST.
Isle of Mull westwards.
Chart BA 2171.
Depths less than charted exist as follows (OSGB36 Datum):
3.8 m, 56-26.54N 006-16.65W
19.3 m, 56-26.01N 006-18.81W
13.8 m, 56-26.51N 006-17.26W
18.7 m, 56-26.41N 006-19.67W
18.7 m, 56-25.82N 006-30.06W
19.1 m, 56-26.66N 006-31.48W.
Other depths less than charted exist in this area.

107/12 * 082315 UTC May 12 * IRISH SEA. Liverpool Bay Approaches. Platform under construction.

NAVAREA I
107/12
082315 UTC May 12

IRISH SEA.
Approaches to Liverpool Bay, Douglas Oil Field Northwestwards.
Charts BA 1978 and 1981.
Conwy Production Platform under construction 53-37.6N 003-40.3W.

098/12 * 011620 UTC May 12 * IRISH SEA. Millon Gas Field North-eastward. Safety Zone established.

NAVAREA I
098/12
011620 UTC May 12

IRISH SEA.
Millon Gas Field North-eastward.
Chart BA 1320.
Safety Zone, radius 500 metres, established at uncharted subsea structure, 54-04.45N 003-40.48W.

097/12 * 011610 UTC May 12 * NORTH SEA, UK SECTOR. Safety Zones established.

NAVAREA I
097/12
011610 UTC May 12

NORTH SEA, UK SECTOR.
Chart BA 278.
Safety Zones, radius 500 metres, established at the following uncharted subsea structures:
A. Ettrick Field, 57-50.86N 000-38.67W.
B. Buchan Field, 58-01.34N 000-13.30E.
C. Buchan Field, 58-02.86N 000-06.46E.

087/12 * 210035 UTC Apr 12 * NORWEGIAN SEA. TSS Off Stad. Seismic survey by M/V Geo Caspian

NAVAREA I
087/12
210035 UTC Apr 12

NORWEGIAN SEA.
TSS Off Stad.
Chart BA 2182D.
Seismic survey vessel M/V Geo Caspian is towing 14 x 6500 metre long cables within area bounded by 62-04.7N 003-32.1E, 62-04.4N 004-06.6E, 61-19.5N 004-06.2E and 61-19.6N 003-32.2E. Guard vessels in attendance. Wide berth requested.

084/12 * 160200 UTC Apr 12 * IRELAND, EAST COAST. East Codling Light-buoy moved Eastward.

NAVAREA I
084/12
160200 UTC Apr 12

IRELAND, EAST COAST.
Codling Bank.
Chart BA 1468.
East Codling Light-buoy moved Eastward to 53-08.56N 005-46.13W.

078/12 * 101405 UTC Apr 12 * ENGLAND, SOUTH COAST. Weymouth Approach. Artificial reef established.

NAVAREA I
078/12
101405 UTC Apr 12

ENGLAND, SOUTH COAST.
Weymouth Approach.
Chart BA 2255 (INT 1725).
Artificial reef established centred on 50-36.8N 002-20.4W. Depths up to 4 metres shoaler than charted exist within 0.4 mile radius of this position.

048/12 * 131725 UTC Mar 12 * DISPLAY ANOMALIES IN SOME ECDIS.

NAVAREA I
048/12
131725 UTC Mar 12

DISPLAY ANOMALIES IN SOME ECDIS.
Mariners are advised that the International Hydrographic Organization (IHO) check data set shows that some ECDIS systems fail to display some significant underwater features in the Standard display mode. The use of this check data set (issued through ENC service providers and available from the IHO website www.iho.int) to check the operation of ECDIS is strongly recommended. JRC has confirmed that certain versions of JRC ECDIS fail to display some types of wreck and obstruction (including stranded wrecks) in any display mode. Where JRC ECDIS is in use, paper charts should be the primary means of navigation until the ECDIS has been proved to operate correctly. 
See  http://www.jrc.co.jp/eng/product/marine/whatsnew/20120313/index.html  for further information.

044/12 * 101325 UTC Mar 12 * ENGLAND, SOUTH COAST. Off Casquets TSS. Channel light-vessel characteristics temporarily changed.

NAVAREA I
044/12
101325 UTC Mar 12

ENGLAND, SOUTH  COAST. 
Off Casquets TSS.
Chart BA 2454 (INT 1702).
Channel light-vessel 49-54.459N 002-53.744W temporarily changed to, Fl.5s15m22M, Horn (1) 30s, Racon (T).

303/11 * 111340 UTC Nov 11 * LORAN-C. NORTH-WEST EUROPE. Station Vaerlandet off-air.

NAVAREA I
303/11
111340 UTC Nov 11

LORAN-C.
NORTH-WEST EUROPE.
Station Vaerlandet, Chain rates 9007Y and 7499Y off-air.

203/11 * 041355 UTC Aug 11 * SOUTHERN NORTH SEA. Off Southwold and Lowestoft. Numerous ships at anchor or manoeuvring slowly, including ship to ship transfer operations. Caution advised.

NAVAREA I
203/11
041355 UTC Aug 11

SOUTHERN NORTH SEA.
Off Southwold and Lowestoft.
Chart BA 1504 (INT 1510).
1. Numerous ships at anchor or manoeuvring slowly, including ship to ship transfer operations, in area bounded by 52-10N 001-40E, 52-10N 002-05E, 52-26N 002-15E, 52-30N 002-00E and 52-26N 001-46E.  Caution advised when transiting this area.
2. Any vessel anchoring in this area must keep well clear of all charted submarine cables.
3. Cancel Navarea I 056/10.

317/10 * 290525 UTC Oct 10 * Use of ECDIS

NAVAREA I
317/10
290525 UTC Oct 10

As previously notified by NAVAREA warning, mariners using ECDIS are reminded not to rely solely on automated voyage planning and monitoring checks and alarms. Some ECDIS appear only to undertake route check functions on larger scale ENCs and therefore alarms might not activate. This may not be clearly indicated on the ECDIS display. Mariners should always undertake careful visual inspection of the entire planned route using the ‘other / all’ display mode to confirm that it, and any deviations from it, is clear of dangers.
Recent preliminary investigation indicates that some ECDIS may not display certain combinations of chart features and attributes correctly and on rare occasions may fail to display a navigationally significant feature. This appears to be caused by anomalous behaviour in some ECDIS software, especially early versions. The existence of such anomalies highlights the importance of maintaining ECDIS software to ensure that operational capability and reliability are maintained. It is recommended that appropriate checks are made with the equipment manufacturer. This is of particular importance where ECDIS is the only source of chart information available to the mariner.
The International Hydrographic Organization (IHO) is investigating these matters in consultation with ECDIS equipment manufacturers. Further information will be made available through Notices to Mariners and within the UK element of the README.TXT file included on ENC service media.
Cancel 230/10.
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