Notices to Mariners - Week 50

tillergirl

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UKHO Permanent/Temporary/Preliminary Notices

1. FRANCE - North Coast - Foul. -
A new FOUL on the Haut-Fond de Gravelines bank off Dunkerque. There have been two earlier NtMs (1609 and 5307) this year about the ‘bank’ notifying obstn and other FOULS. Image shows all the changes.
2. ENGLAND - East Coast - Foul. - A new FOUL in the Two-Way Route at the Long Sand Head. Not a place for leisure craft to anchor! There have been four previous NtMs (3310, 3706(P), 4540(P) and 5483) this year reporting reduced depths there. The image includes all the ‘activity’.
3. ENGLAND - East Coast - Depths. - Three slight reductions of depth at the north entrance of Fisherman’s Gat and 2 just outside of the Knock John Channel (where we ought not to be). Depths at the Fisherman’s Gat are ample for leisure craft.
4. FRANCE - North Coast - Wreck. - One new wreck on the Bassure de Baas off Boulogne, just East of the App. Boulogne south cardinal buoy. At just over 10m, unlikely to hinder leisure craft.
5. ENGLAND - East Coast - Buoy. Obstruction. - A temporary notice confirming the local Sizewell Harbour NtM No 15. A lit orange buoy marks an obstruction which may extend 4m up from the seabed. A 200m clear zone is recommended round the orange buoy. The image includes the marking of the Sizewell Harbour limits.

All images found at: Notices to Mariners

Local

1. River Thames - Gravesend Reach - Red Lion Wharf: Lifting Operations -
commencing on Thursday 4th December for approximately 2 days, lifting operations will be taking place at Red Lion Wharf in Gravesend Reach. The exact location is indicated by a red box on the chartlet: Works involve personnel working from a Mobile Elevated Works Platform (MEWP) onboard Multicat ‘CHILI DOG’ positioned alongside the berth. Requirements to proceed with caution or at slow speed will be made in accordance with the procedure set out in the Port of London Authority’s Port Information Guide, under ‘Speed Reductions’, with the International Code Flags ‘Romeo Yankee’ displayed. The display of these signals will be in addition to any lights or shapes required under local regulations and the International Regulations for the Prevention of Collisions at Sea. Further information will be broadcast by London VTS on VHF 68.
2. River Thames - Gravesend Reach - Northfleet Thames Terminal: Diving & Lifting Operations - commencing on Monday 8th December 2025 for approximately two days, diving and lifting operations will take place at Northfleet Thames Terminal as shown on the chartlet. Tug ‘SILVERBEAM’, Barge ‘RP BLACKWALL’ and Workboat ‘MARY J’ will be in attendance and will be displaying the following signals while diving is taking place:
By day, International Code Flags ‘Romeo Yankee (RY)’, ‘Alpha (A)’ and a red flag near the diver’s point of entry into the water.
By night, illuminated rigid replicas of the International Code Flags ‘Romeo Yankee (RY)’ and ‘Alpha (A)’.
Requirements to proceed with caution or at slow speed will be made in accordance with the procedure set out in the Port of London Authority’s Port Information Guide, under ‘Speed Reductions’. Further information will be broadcast by London VTS on VHF 68.
3. River Thames - Bugsbys Reach - Victoria Dock Entrance: Relocated Barge Tier - on or around 1st December 2025, the collar barge currently located at ‘Waterloo Barge Tier’ will be permanently moved to a new location in the vicinity of Victoria Dock Entrance. This notice will remain in place until such time as adequate chart corrections have been promulgated.
4. Harwich Haven - Survey and Dredging Operations – Update 4 - survey and dredging operations are taking place as follows:
Yogi 9479785 Plough 22/11/25 22/12/25 All areas
The backhoe dredger Magnor is carrying out boulder removal operations in Harwich Harbour and the Harwich Deep Water Channel, with the assistance of multicat tug Wind Lass. Tug Union Topaz is working with split-hopper barge Terraferre 501, to transport boulder material to the Inner Gabbard East disposal site. Contact Harwich VTS (VHF 71) for more information.
5. Harwich Haven - Surveyed Depths – Harwich Harbour - Update 23 - The controlling depth for deep draught vessels navigating within the harbour area should currently be taken as 15.4m below chart datum, plus height of tide. Significant depths below chart datum (not including inside berth boxes) are:
• 15.4m - spot soundings between the North West Beach Buoy and Grisle Buoy
• 15.3m - spot soundings between the Grisle Buoy and Shotley Spit Buoy
• 15.2m - spot soundings between the Shotley Spit Buoy and Babergh Buoy
Contact Harwich VTS or Haven Pilots for further information regarding tidal windows.
6. Chatham Docks – North Lock & Approaches - Dredging Operations - are due to take place at Chatham Dock North Lock and approaches, dredging is due to commence on or around 2nd of December 2025 with completion expected by 16th December 2025. All dredging will be carried out by the water injection dredger (WID) “Melwey” who will maintain a listening watch on VHF Channel 74 at all times and display the required signals for respective operations by day and night. Dredging will be focussed within the north lock between inner and outer gate and in the approaches to the north lock as shown. All vessels passing Chatham lock approaches and manoeuvring in and out of Chatham Docks during the dredging period are requested to navigate with caution reducing speed and wash accordingly. Further information may be obtained from Medway VTS on VHF Channel 74, call sign “Medway VTS” or telephone 0151 949 6148 or 0151 949 6650 (Recorded Lines)
7. River Crouch - Fairway Lighted Buoys No 3 and 11NAVIGATION - Fairway No 3 Lighted Buoy in approximate position 51°37.176 N, 000°50.014E and Fairway No 11 Lighted Buoy in approximate position 51°37.436 N, 000°48.301 E have been removed temporarily for maintenance.
8. River Crouch - Raysand Buoys – NAVIGATION - the Raysand Buoy in approximate position 51°40.840 N, 001°00.570 E and Raysand North Buoy in approximate position 51°40.810 N, 001°00.570 E are now back on station.
9. Blakeney Harbour - No. 1 Starboard Lateral Marker - No. 1 starboard lateral marker is off station and ashore on Blakeney point. All vessels should avoid entering Blakeney Harbour until further notice, especially at night. If entering the following pilotage should be observed to navigate across the bar. From Fairway Marker follow a bearing of 175*T for 0.4NM until due east of starboard lateral marker #3. Then follow a bearing of 270*T towards starboard lateral marker #3. After this all-lateral marker’s positions are valid and can be followed visually.

That's it. 🧑‍🎄
 
And, of course, as we expect, a late Monday evening Harwich local notice:

Survey Operations – Morgan James 3- (callsign: MSKD5) is carrying out survey and water sampling operations from 02 December 2025 until 24 December 2025 as follows:
Area of Operation Activity

In Close Proximity to Harwich Harbour Localised Acoustic Doppler Current Profiler (ADCP) survey and water sampling operations
In Close Proximity to Harwich Deep Water Channel (HDWC) Localised ADCP survey and water sampling operations

Landguard Point ADCP survey in cross channel transects

River Stour ADCP survey and water sampling in cross river / estuary transects

River Orwell ADCP survey and water sampling operations in cross river / estuary transects

For more information contact Harwich VTS on VHF 71 or Morgan James 3 directly.
 
And another local notice this morning 🤬 :

River Thames - Greenwich Reach: Temporary River Closure
On 4th December 2025 from approximately 21:45 for a duration of approximately 5 minutes, a fireworks display will be taking place in the vicinity of the Royal Naval College, Greenwich.
To facilitate the fireworks display, a temporary RIVER CLOSURE will be in force between 21:35 and 21:55 between the upriver end of Greenwich Pier and the upriver end of the former Greenwich Power Station Pier.
This river closure is depicted as ‘Closed to Navigation’ in the chartlet (I shall upload it on my usual webpage in the Local List in about an hour - Done).

Other than event vessels approved by the Harbourmaster, no vessels are permitted to enter the river closure. An EXCLUSION ZONE of 100m will be established around the fireworks display vessel which will be
positioned within the River Closure. No vessels are permitted to enter, and manned vessels must not remain within the Exclusion Zone except the display vessel. Vessels engaged in the fireworks operations include tug THAMES BOSUN and barge REMUS. Local Traffic Control will be undertaken from PLA Harbour Service Launches exhibiting blue flashing lights. All vessels are to navigate with caution in the vicinity of the River Closure boundaries; maintain an effective, continuous listening watch on VHF Channel 14; and promptly comply with all instructions which may be given by the attending Harbour Service Launches. Vessels approaching the area should contact ‘GREENWICH CONTROL’ on VHF Channel 14 and await further instructions.
Further details will be broadcast by London VTS on VHF 14.
 
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