Notices to Mariners Weeks 27-30

Notices to Mariners Week 27-30 – Notices to Mariners for the Southern East Coast of the UK and across to France, Belgium and part of Holland

Sorry for the delay – catching up after holidays

Week 27

UKHO Permanent/Temporary/Preliminary

1. ENGLAND – East Coast – Depths. Wrecks. – Three revised depths over wrecks on and adjacent to the West Barrow Sands. Image and details at as usual;
2. ENGLAND – East Coast – Obstructions. Buoyage. – The placing of underwater trays for Oyster cultivation at West Mersea and 6 yellow special buoys was reported last week in the local NtMs by the London Zoo. Now recorded by UKHO.


1. GRAVESEND REACH TILBURY2 MARINE WORKS – This notice supersedes previous L23 of 2019 – Numerous marine works are underway as part of the TILBURY2 development. Current activities and activities due to commence shortly are summarised on the notice to go to the above page and call up the Temporary list;
2. Harwich Haven – Container Crane Ship Zhen Hua 24 – on or about the 21st of June 2019 (afternoon) the container crane ship Zhen Hua 24 is expected to arrive in Felixstowe with a duration of stay of approximately 7 days. During the transit both inwards and outwards, the Zhen Hua 24 will require a clear channel from the South Shipwash buoy to her berth at Felixstowe.
At all times during her stay there will be cranes on deck in the boom down position extending into the harbour area, please note that the ends of the booms will not be illuminated.
All vessels are requested to give the Zhen Hua 24 as wide a berth as practicable and to pass with minimum wash at all times. Details of crane discharge operations will be broadcast by and obtained from Harwich VTS. Lights and shapes as required by the Collision Regulations will be exhibited and a listening watch on VHF channel 71 will be maintained through the operation.
3. MARKER BUOYS – LIGHTS NOT CURRENTLY WORKING – WEST MERSEA – On Friday 21st June 2019, six yellow marker buoys were deployed in the following locations approximately 500m offshore to the south-east of West Mersea, together with Collector 3 and Collector 6 (two oyster spat collector A-frames that stand 1.2m tall on the seabed): The lights on the marker buoys are currently not working. Trinity House have been made aware of the situation and the Essex Native Oyster Restoration Initiative endeavour to have the problem resolved as soon as possible. In the meantime, mariners are requested to be cautious when near to this location, particularly during hours of darkness.
4. Safe distances within the London Array Offshore Wind farm: A number of different sized cautionary zone are reported: 50m established around each wind turbine and offshore substation platform; a long term 500-meter exclusion zone has been implemented around D20 – (51° 38.024’N 01° 24.612’E) as a precaution until further notice due to a damaged blade. (That is not close to Foulger’s Gat; a short term 500-meter exclusion zone has been implemented around C17 – (51° 37.132’N 01° 25.641’E) this location stands in the Foulgers Gat channel and a wide approach is requested; The MPI Adventure will move from WTG to WTG, spending approximately 36-48 hours at each location. When located at a WTG, a 500-meter exclusion zone will be put in place centered on the MPI Adventure; Short term 200-meter exclusion zones will be in place at various locations while MPI Dulcinea and MPI Rucio are carrying out rope access works; The Bokabarge 82, Boka Constructor and NP459 will move from WTG to WTG carrying out cable maintenance works. Whilst operational, and in transit, a 750-meter exclusion zone will be put in place centered on these vessels. • The Katabatic will move from WTG to WTG carrying out diving operations. Whilst operational, and in transit, a 500-meter exclusion zone will be put in place centered on this vessel. ALL VESSELS WISHING TO TRANSIT THROUGH THE LONDON ARRAY WIND FARM SHOULD MONITOR VHF CH16 AND MAKE EVERY EFFORT TO CONTACT LAL VESSELS ON SITE PRIOR TO ANY ENTRY.


Spitway profile between the buoys by Roger Gaspar, on Flickr

Last Tuesday I did a re-survey of the Spitway. Perfect conditions, lovely and flat. The results are that the Spitway is little changed; perhaps the Buxey is creeping to the east. Best water is to the east. Whilst it amounts to nothing more than 0.2m (about 7.5 inches), the shallowest bit (at 1.7m at CD) is the shortest. I have posted a new chartlet on my web site and have included some notes regarding heights of tides and timing. See – second item.

I plan to do the Ray Sand next week, weather permitting.

Week 28

UKHO Permanent/Preliminary/Temporary. Not very exciting – or more accurate, not exciting at all:

1. ENGLAND – East Coast – Legends. – New legends in the Oaze and Mouse channel areas: The Oaze Restricted Zone and EAST MOUSE CHANNEL are added.
2. ENGLAND – East Coast – Dredged depths. – This notifies the dredged depths at 6 locations at Ipswich Container Port (alongside).
3. ENGLAND – East Coast – Depth – One reduced depth in Sandettie Deep Water channel south of the Foxtrot 3 ‘roundabout’. At 26.5m this will not hinder leisure craft.
4. ENGLAND – East Coast – Depths. – River Thames – One reduced depth of 4.4m on the edge of the south side of the channel right by the Broadness PHB.


1. The lights on the new yellow buoys marking the new Oyster Trays off West Mersea are now working;
2. ADA Point Flashing Red Light – Bridgemarsh Creek, River Crouch – the red light on ADA Point at the entrance to Bridgemarsh Creek is barely visible. Caution should be taken when entering and leaving Bridgemarsh Marina.
3. Lowestoft – PORT TRAFFIC SIGNAL LIGHTS – due to a technical fault Port Control are currently unable to change port traffic signals at harbour entrance and RNSYC yacht basin. The lights will remain set as follows:
Harbour entrance – On south pier – will be fixed to 3 fixed vertical red lights for inbound and 3 vertical green – white – green for outbound.
Yacht Basin – RNSYC – 3 fixed vertical red lights.

Regardless of direction of transit, all vessels shall contact Lowestoft Port Control to gain permission for entry/exit. (VHF Ch.14, Tel. 01502 572286).
4. Port of Wells – dredging;
5. Approaches to King’s Lynn. – UKD “Cherry Sand” Dredging Disposal West Stones Disposal site HU143 – from the PM tide 1st July through until the PM Tide 11th July 2019, UKD Vessel “Cherry Sand” will be carrying out maintenance dredging for the safety of shipping within the enclosed Docks King’s Lynn.

Each operational tide the “Cherry Sand” will depart King’s Lynn Docks 1 hour to High water and proceed to the disposal area in the vicinity of the West Stones Beacon (52° 49.7’N 000° 21.1’E). The disposal area is marked by 2 Yellow marker buoys;-  SGNW buoy Fl.Y.5s 52°50.615’N 000°21.160’E.  SGW buoy Fl.Y.10s 52°50.360’N 000°21.270’E. Discharge will be carried out at approximately High Water followed by return to King’s Lynn Docks about 30 minutes after high water.

Mariners are requested to keep clear when the vessel is arriving and departing the Docks and on the disposal area as the vessel will be restricted in its ability to manoeuvre, and to navigate with caution whilst these works are taking place. The “Cherry Sand” will monitor VHF channel 14.

Week 29

UKHO Permanent/Preliminary/Temporary

1. ENGLAND – East Coast – Depths. – Two reductions of depth around the Sandettie SW Buoy in the Sandettie DW channel. Unlikely to hinder leisure craft.
2. BELGIUM – Buoy. – De Hann – In week 16, NtM 1958(T) notified of a new north cardinal buoy off the Belgium coast near De Hann named as Q.W. DCI. Now it is Q DCI!
3. ENGLAND – East Coast – Buoy. – Trinity House notified us of a small move of the SW Barrow cardinal buoy in week 26. This is the UKHO notification.
4. ENGLAND – East Coast – Depth. – One small reduction of depth on the south edge of the Thames channel opposite West Tilbury. At 7m unlikely to hinder leisure craft.

Quiet weeks are good weeks!


1. RIVER MEDWAY SALTPAN REACH – GRAIN LNG JETTY NO.8 – PILE INSPECTIONS – on Wednesday 10th July 2019, pile inspection work will commence at Grain LNG Jetty No 8 and last for
approximately 3 days. The jetty is centred in the following approximate position: Terminal NO.8: 51 0 25.93′ N 0000 42.18′ E. Men will be working on the waterline and underneath the jetty head with the workboats “Avocet” & “Pup” and a small RHIB tender. The International code of signal/boards “RY” will be displayed at the Jetty Head and the workboat “Avocet” will be monitoring the exclusion zones to warn and if deemed necessary slow down any leisure craft approaching the LNG Jetties at speed. Mariners are politely requested to slow down, make minimum wash and maintain a listening watch on VHF Channel 74, navigate with caution and keep well clear of the permanent exclusion zones. (Medway Notice to Mariners No 02-2019 refers).
Further information may be obtained from Medway VTS on VHF Channel.
2. ADA Point Flashing Red Light – Bridgemarsh Creek, River Crouch – the red light on ADA Point in approximate position: 51˚ 38.410’N 000˚ 45.687’E at the entrance to Bridgemarsh Creek is now working correctly.

Week 30

UKHO Permanent/Temporary/Preliminary

1. ENGLAND – East Coast – Buoyage. – Buoyage changes in the approach channel for the Wisbech Cut. Image in the usual page:
2. NETHERLANDS – NM Blocks. Depths. – The UKHO block provides a useful new area of the inshore buoyed channel off the Zouteland coast. There are two blocks of the same area depending upon the chart. Both available on the download button. A reduced sounding further to the north off the Domburg coast is repeating NtM 1116.
3. BELGIUM – Lights. Signal station. Platform. Fog signal. Automatic Identification System. – NtM 3199(P) in week 26 reported a scientific research platform, NEMOS, marked by special light-buoys, then under construction, is now complete. The Traffic tower in Ostend is now deleted and the new platform is marked. Two images worth looking at on the above page.


1. RED SAND TOWERS HELICOPTER & DRONE FILMING OPERATIONS – Filming will take place at Red Sand Towers from low flying aircraft and a drone / unmanned aerial vehicle (UAV) in support of a film production. Two images can be found in the Temporary list in the above page. Filming operations will be undertaken by two helicopters from 04:00-10:00 at the Red Sand Towers site on the 16th & 17th July 2019. The helicopters will use a maximum radius of up to 1 NM from the towers when safe to do so. They will keep clear and not interfere with passing traffic. Estuary Services Limited pilot vessel ESTUARY ELAN will be stationed in the vicinity of the site keeping a listening watch on VHF Channel 69. Filming operations will also take place by drone from 08:00-13:00 at the Red Sands Towers site on the 18th & 19th July 2019. The drone will be flown from the vessel X-PILOT which will be on station throughout the drone operations and also monitoring VHF Channel 69. All vessels involved with the operation will maintain a continuous listening watch on VHF Channel 69 & 16.
2. Harwich Harbour Maintenance dredging – Harwich Haven berths and approaches – on or about the 10th of July 2019 the plough dredger AFFON LLIGWAY will commence maintenance dredging of Felixstowe, Harwich International, Mistley channel and Harwich for approximately 14 days. Mariners are also advised that on or about the 17th of July 2019 the trailer suction dredger HAM 316 will commence maintenance dredging of the Harwich Haven berths and approaches for approximately 10 days. Survey work in regard to the dredging operations will be conducted by the survey/crew vessel Havik, due to commence work from 10th July 2019. Material from these areas will be disposed to the Harwich Haven TH027 disposal site.
3. “Mind Your Wash” – Mariners are requested to be extra vigilant and reduce their speed and keep wash to as minimal as possible when passing newborn seals, particularly in the River Roach area. The Conservation of Seals Act (1970) protects common seals during their breeding season and it is illegal to cause disturbance that may affect the newborn pups.
Your co-operation in this matter would be appreciated.
4. Foul Anchorage, River Roach – Quay Reach – Mariners are advised that we have had a report of “foul ground” (Anchorage) approximate depth LW 5m in position 51˚36.206’N 000˚52.223’E
All vessels are advised to avoid this area when anchoring in the River Roach.
5. Port of Wells – Dredging
6. NAVIGATION WARNING – Blakeney Harbour Entrance – The entrance channel to Blakeney Harbour, in the vicinity of the HJORDIS wreck, is changing rapidly. Currently the primary channel remains as buoyed, but the entrance channel between the Bar and Harbour Entrance buoy number 3 is becoming very narrow and can be extremely hazardous in times of moderate to heavy swell. Those Mariners familiar with Blakeney Harbour Entrance may now prefer to enter and leave the harbour using the new channel (currently not buoyed) which is opening up from Harbour Entrance buoy number 3 heading out WNW, running South and West of the HJORDIS wreck. Great care and local knowledge is required to safely navigate this channel, ensuring a route is taken where the swell isn’t breaking. We are monitoring this situation closely, and suggest that for the time being Mariners entering the harbour for the first time should first obtain up to date pilotage information by phoning CHARLIE WARD.

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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