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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Many warnings are of a temporary nature, but others may remain in force for several weeks and may be superseded by Notices to Mariners.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: 101001 UTC FEB 12
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018/12 * 101000 UTC Feb 12 * NAVAREA I WARNINGS IN FORCE AT 101000 UTC FEB 12.

NAVAREA I
018/12
101000 UTC Feb 12

1. NAVAREA I WARNINGS IN FORCE AT 101000 UTC FEB 12:

2008 SERIES: 341.
2010 SERIES: 317.
2011 SERIES: 203 294 303.
2012 SERIES: 007 008 015 016 018.

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 (007/12 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 014/12.

016/12 * 060500 UTC Feb 12 * RIGLIST. Correct at 060500 UTC FEB 12.

NAVAREA I
016/12
060500 UTC Feb 12

1. RIGLIST. Correct at 060500 UTC FEB 12.
 
         Southern North Sea: 51 to 55N.
         52-54.5N 003-27.4E   Noble Byron Welliver
NEW 53-24.3N 001-47.1E   Ensco 92
         53-35.5N 001-46.5E   Noble Julie Robertson
         54-03.1N 004-29.3E   Maersk Resolute
         54-19.0N 002-37.2E   Ensco 80

         North Sea: 55 to 60N, East of 5W and the Baltic Sea.
         56-12.0N 002-45.9E   Ocean Princess
         56-22.9N 004-14.2E   Maersk Giant
         56-38.9N 002-29.5E   GSF Galaxy 2
         56-42.0N 003-08.6E   Maersk Gallant
         56-54.9N 002-24.0E   Rowan Gorilla 6
         57-03.9N 003-02.7E   Maersk Guardian
         57-09.3N 000-35.4E   Sedco 704
         57-11.0N 002-13.0E   Sedco 711
         57-13.4N 001-53.7E   Ensco 101
         57-36.0N 001-38.6E   Ensco 100
         57-42.0N 002-27.0W  Maersk Resilient
         57-45.0N 001-04.9E   Rowan Gorilla 7
         57-48.4N 001-50.2E   Ocean Nomad
         57-53.6N 000-40.4W   Transocean Prospect
         58-22.4N 000-56.4E   Noble Ton Van Langeveld
         58-25.4N 001-43.4E   West Epsilon
NEW 58-48.2N 002-34.3E   Bredford Dolphin
         59-09.8N 001-37.1E   Paul B Lloyd Jnr
 
         Norwegian Sea: 60N to 65N, East of 5W.
         60-32.8N 001-43.0E   Sedco 714
         60-34.0N 002-44.7E   COSL Pioneer
         60-43.8N 003-39.4E   West Venture
         60-51.3N 003-26.7E   Transocean Leader
         60-52.1N 003-33.5E   Stena Don
         60-54.9N 003-35.2E   Songa Trym
         60-56.7N 001-33.7E   Wilhunter
         61-01.9N 003-26.8W  Stena Carron
         61-05.9N 002-16.6E   Deepsea Atlantic
         61-08.2N 002-00.9E   Songa Dee
         61-18.0N 002-21.8E   Ocean Vanguard
         61-20.3N 003-57.4E   Transocean Searcher
         61-22.7N 002-06.2E   Bideford Dolphin
         61-29.8N 001-36.0E   Byford Dolphin
         64-48.7N 007-03.4E   Transocean Arctic
         64-58.1N 006-41.2E   Transocean Winner
 
         South and West Coasts of the British Isles.
         51-12.1N 008-17.2W  GSF Arctic 3
 
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 012/12.
 

015/12 * 031320 UTC Feb 12 * ENGLAND, SOUTH COAST. Chart BA 777. Lizard Light exhibited during hours of darkness only.

NAVAREA I
015/12
031320 UTC Feb 12

ENGLAND, SOUTH COAST.
Chart BA 777.
Lizard Light, 49-57.6N 005-12.1W, exhibited during hours of darkness only.

008/12 * 181410 UTC Jan 12 * ENGLAND, SOUTH-EAST COAST. North Foreland Light exhibited during hours of darkness only.

NAVAREA I
008/12
181410 UTC Jan 12

ENGLAND, SOUTH-EAST COAST.
Chart BA 323 (INT 1564).
North Foreland Light, 51-22.5N 001-26.7E, exhibited during hours of darkness only.

007/12 * 161420 UTC Jan 12 * BRISTOL CHANNEL. Culver Sand north-westward. Anchor and cable abandoned.

NAVAREA I
007/12
161420 UTC Jan 12

BRISTOL CHANNEL.
Culver Sand north-westward.
Chart BA 1152
Anchor and about 15 metres of cable reported abandoned 51-18.6N 003-19.7W.

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.

294/11 * 011305 UTC Nov 11 * SCOTLAND, WEST COAST. Outer Hebrides. Barra Head Light, range temporarily reduced.

NAVAREA I
294/11
011305 UTC Nov 11

SCOTLAND, WEST COAST.
Outer Hebrides.
Chart BA 1796 (INT 1627).
Barra Head Light, 56-47.1N 007-39.2W, range temporarily reduced to 10 miles.

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.

341/08 * 311420 UTC Oct 08 * SOUTHERN NORTH SEA. UK SECTOR. Unexploded ordnance

NAVAREA I
341/08
311420 UTC Oct 08

SOUTHERN NORTH SEA, UK SECTOR.
Chart BA 1408
1. Unexploded seabed ordnance exists:
a. Within area bounded by 52-25N, 53-12N, 002-00E and 003-15E.
b. Within 3 miles either side of line joining: 52-05N 002-32E and 52-20N 003-00E.
c. In vicinity of positions 52-46.4N 001-41.9E and 53-22N 001-31E.
2. Cancel 176/08.
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