Notices to Mariners Week 40

Notices to Mariners Week 40

UKHO and Trinity House Permanent/Temporary and Preliminary

1. ENGLAND – East Coast – Depths. – Three changes of depth on the River Thames off Coalhouse Point. At 7.3m+ unlikely to hinder leisure craft.
2. East Coast Of England – Approaches To Great Yarmouth – Holm Channel – Trinity House notification of the movement of the S. Corton and NE Holm buoys to the NNE. If you go back to Week 9, you will see the interesting movement over the year.


1. GRAVESEND REACH REMOVAL OF EXISTING BROW, RADIAL ARMS AND PONTOON WEST STREET PIER – During the week commencing 23rd September 2019 preparatory work will commence for the removal of the West Street Pier including its brow, radial arms and pontoon. Preparatory works will last for approximately 1 week. On or around 7th October 2019 lifting operations will commence to remove the various structures associated with the pier – full details in the Temproary List on Page: – Removal of the structure is expected to take 2 days with the brow and radial arms being towed away on the VENTURE and DAVE GIBSON respectively for disposal. On the 8th or 9th October 2019 the pontoon will be towed by the tug “DEVOUT” for disposal in Erith. The tow will be subject to weather conditions and requires a rising flood tide with London VTS advising vessels of any changes to this expected tow date. During the lifting operations and tow the Lower District Harbour Service Launch will be in attendance, as required. Further information and updates will be available from London VTS on VHF Channel 68.

2. SEA REACH BERTH 4 BOREHOLE SAMPLIN GDP WORLD LONDON GATEWAY – During the week commencing 23rd September and lasting for approximately 14 days, the jack-up barge (JUB) ‘SKATE 3E‘ will be undertaking geotechnical investigations to inform the further design of the new berth No. 4 and quay extension. During the works support vessels will be provided by Capital Pleasure Boats and the RIB ‘OYSTER 3’ will be utilised for the transfer of crew twice a day between the JUB and Canvey Island. For the safety of those working on board the SKATE 3E a temporary 100m exclusion zone will be in place except in the following circumstances: Vessels arriving or departing Berth No. 3; Vessels alongside Berth No. 3.; Tugs assisting vessels on and off Berth No. 3 In the above circumstances, those vessels are permitted to be within 75m of the jack-up barge. The repositioning of the JUB will be carried out in conjunction with London VTS to ensure there is no impact with vessels manoeuvring in the area. During the repositioning of SKATE 3E it will be restricted in its ability to manoeuvre.

3. Harwich Harbour – Sunken Recreational Vessel & Debris – two recreational vessels of approximately 14 feet in length are lying awash in the following approximate position in the intertidal zone opposite Harwich Town Sailing Club. 51 º 56.7ˈ N 001 º 17.5ˈ E (see the Local List on the above page). Reports indicate that debris from the sunken vessel has also made its way onto the foreshore and there may be some afloat in the surrounding area. Harwich Haven Authority will be working with the vessel owner and local authorities to resolve the issue. Mariners are advised to navigate with care and caution and maintain a lookout at all times. Any reports of floating debris should be reported immediately to Harwich VTS on VHF 71 or via telephone on 01255 243000.

4. RIVER MEDWAY –SALTPAN REACH –GRAIN LNG -JETTIES NOS. 8 & 10 Fender Panel Inspections – The work will commence Monday 23rd September 2019 and last for approximately 12days. Men will be working on the waterline and at height using crane barge ‘Renate II’ and tug ‘Avocet’. Works craft will be maintaining a listening watch on VHF Channel 74 whilst operations are taking place. The jetties are centred inthe following approximate positions: Terminal No.8: 51° 25.93’ N000° 42.18’ E Terminal No.10: 51° 25.94’ N000° 42.54’ E International Code of Signals flags, “RY”,will be displayed at the jetty head and Mariners are advised to slow down, make minimum wash and maintain a listening watch on VHF Channel 74, navigating with caution and keeping clear of the 150m exclusion zones when passing the Grain LNG Terminal.

5. Havengore Bridge: Manual Operation – Whilst our contractors are making good progress towards repairing the current fault, they are estimating that it will not be fully resolved for another 6-8 weeks. In the meantime, QinetiQ has instructed the Contractor to conduct some immediate adaptation works that will render the Bridge suitable and safe for full manual operation. We are pleased to confirm that we will be manually operating Havengore Bridge to allow passage for marine traffic on:

• Saturday 28 & Sunday 29 September
• Saturday 12 & Sunday 13 October
• Saturday 26 & Sunday 27 October

The bridge will be operated in accordance with the MOD byelaws and so will be staffed for 2 hours either side of high tide, during daylight hours. The manual lifting and lowering process may take a little longer than the automated process so we would appreciate your patience and co-operation. Further dates may be added subject to demand and resourcing considerations. Nicki Uden – Community Liaison Officer, SHOEBURYNESS RANGE

6. LOWESTOFT –OUTER HARBOUR –POWER OUTAGE – on Monday 30th September 2019, there will be a planned Power Outage on the Sembmarine / SLP Site within the Outer Harbour from 09:00hrs LT. The Power Outage is to allow for electrical works to be carried out by UK Power Networks and is planned to last for approximately 9 Hours. The Power Outage will mean that the Navigation Lights on the North Pier and on the East Jetty will be Unlit for the period of the maintenance. Mariners are advised that if this period extends beyond the planned 9 hours, these Navigation Lights will be Unlit during the hours of darkness. Mariners and Port users are advised to navigate with extreme caution in the vicinity of the Port Approaches & within the Outer Harbour and reportt oLowestoft Port Control any problems observed with these Navigation Lightson VHF Ch 14. Please contact Lowestoft Port Control, VHF Ch 14, Tel. 01502 572286, if additional information is required.

7. Port of Wells – dredging.


Link to details –

Local NtMs compiled by and reproduced by kind permission of Roger Gaspar, author of Crossing the Thames Estuary


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