Notices to Mariners Week 34

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Notices to Mariners Week 34

UKHO Permanent/Temporary/Preliminary

New Editions of ADMIRALTY Charts published 22 August 2019 -Chart 1827 Harbours on the South East Coast of England. Approaches to Ramsgate. Pegwell Bay and the River Stour. Ramsgate. Broadstairs. Margate. Includes changes to depths in Ramsgate Harbour from the latest Harbour Authority surveys.

ENGLAND - East Coast - Buoy. – River Medway - Deletion of the yellow buoy at the Blackstakes anchorage (south side of the Medway).

ENGLAND - East Coast - Depths. - This was reported in NtM 4020 in week 32 which notified of 6 reductions of depth in the Sandiette Deep Water and South-West bound separation zone. At all over 20m unlikely to hinder leisure craft. This notice now ‘catches-up’ 4 of the 6 reductions for chart 1610.

ENGLAND - East Coast – Buoyage – River Medway - Change of light characteristics on two light-buoys (Nos 23 ‘Darnet’ and 31) in the Medway. Note No 31 is correct on the Imray chart used for the image below.

ENGLAND - East Coast - Buoyage. Light-beacon. – The Wash - Change and designation of three buoys in the Wisbech Channel buoyage. This replaces NtM 1847 in week 15.

ENGLAND - South East Coast - NM Block. – Ramsgate Harbour – complete new block for chart 1828 – Useful for the new depths following the dredging earlier in the year.

ENGLAND - South Coast - Beacons. – Dover Harbour - Works have been in progress alongside the Price of Wales Pier on the western side of Dover Harbour. Four new piles are now installed.

ENGLAND - East Coast - Depths. - River Thames - One reduction of depth in the middle of the Thames Channel off West Tilbury Marshes. At over 8m CD, not likely to hinder leisure craft.

NORTH SEA - Netherlands Sector - Platform. Restricted area. - Automatic Identification System. - New platform for the Borssele Wind Farm in Dutch waters. 500m restricted zone.

Local

Look for full details and any images/chartlets to: http://www.crossingthethamesestuary.com/page9.html and select for the Temporary List.

WOOLWICH REACH - ENVIRONMENT AGENCY - THAMES BARRIER CLOSURES
The Thames Flood Barrier will be closed once a month for test purposes, in accordance with a programme issued for a period of six months, commencing 01st November 2019 and April, 2020.
Listed are the times between which the Thames Barrier will be closed to navigation for test purposes. During these periods navigation in the Thames Barrier Control Zone, between Margaretness and Blackwall Point, will be restricted and any movements in this area will require permission from London VTS.

UPPER POOL AND SEA REACH TO THE OUTER ESTUARY CLIPPER – AROUND THE WORLD RACE ARRIVAL AND DEPARTURE OF RACING YACHTS
THURSDAY 22nd AUGUST 2019 – UPPER POOL As a part of the Clipper Round the World Yacht Race, 11 yachts will proceed inbound, line astern and under power from sea to the St. Katharine Dock. The yachts will arrive in the Upper Pool for a 17:45 lock in at St. Katharine Dock, escorted by the Harbour Service Launch. SUNDAY 1ST SEPTEMBER 2019 – UPPER AND LOWER POOL The yachts will depart St. Katharine Dock between 15:00 and 15:45 and form up in the Lower Pool. The yachts will navigate inbound from Limehouse into the Upper Pool for a 16:00 Tower Bridge lift. The yachts will stem the tide on the south side of the channel for approximately 30 minutes, before swinging to proceed outward bound, passing through Tower bridge at 16:30. SUNDAY 1ST SEPTEMBER 2019 – SEA REACH TO OUTER ESTUARY The yachts will anchor in the Southend Small Ship Anchorage overnight from 21:00 in preparation for the start of the Clipper Round the World Yacht Race. Vessels are advised to navigate the area with caution. MONDAY 2nd SEPTEMBER 2019 – SEA REACH TO OUTER ESTUARY At 08:00 the yachts will weigh anchor in preparation for the race start at 10:00 off Southend Pier. The Race Start line will be approx. 0.25Nm in length and will be marked by a committee vessel anchored due South of Southend Pier in approximate position 51°30.620N, 000°43.407E as depicted in the chartlet below. All vessels not connected with the race are requested to keep clear of the start area during this time. Following the start, the race course will then take the fleet east from Southend Pier into the Estuary and out to the English Channel. All participating vessels will be instructed to adhere to local regulations as well as the International Regulations for Preventing Collisions at Sea 1972.

River Thames - LOWER HOPE REACH LOWER HOPE POINT REINSTATEMENT OF THE REVETMENTS
Due to the severe erosion of the revetments at Lower Hope at Cliffe Marshes emergency repair works will commence on Monday 12th August 2019 and will continue for up to 4 months.
Works will involve the replacement of rip rap armour stone and additional cohesive material which will be brought to site by flat top barge with mounted excavator. During the works the crane barge “BOXER” will be held in position on spud legs and will act as a mooring station for the barges delivering material. Additional vessels will be involved in these works including various GPS Tugs for the movement of barges and the safety boat DIVECO5. Temporary lights and markers will be positioned to aid the movement and positioning of barges.

River Thames - LOWER HOPE REACH PASSIVE DRIFTWOOD COLLECTOR DEPLOYMENT TRIAL

The deployment of a passive driftwood collector (PDC) will be trialled in Lower Hope Reach in a position due north of the Cliffe Pumping Station as shown above and will swing freely with the tide on its mooring. The PDC will be moored, initially on a temporary basis, for an evaluation trial of approximately 6 months. If the trial is successful it may remain in this position on a permanent basis. Confirmation of this will be advised in a future Notice to Mariners. The PDC will be marked with a flashing yellow light displaying the light characteristics Fl.Y.2s.

GREENWICH REACH OBSTRUCTION IN THE AUTHORISED CHANNEL
A recent survey in Greenwich Reach revealed an obstruction and a reduced depth. On 9th August 2019 a temporary lit yellow Special Mark (Fl.Y.2) will be placed on the reduced depth and will remain in place until the obstruction is removed. All vessels are to navigate in this area with caution. Please see the chartlet.

MORTLAKE REACH TO GREENWICH REACH - ADVANCED NOTICE OF RIVER CLOSURE - REGATTA LONDON
On Sunday 29th September 2019 a mass participation rowing and paddling event supported by the Tideway Tunnel project is planned to take place from Chiswick Bridge to the Old Royal Naval College, Greenwich. The event has been named ‘Regatta London’ and will coincide with the annual Thames Barrier closure. This Notice provides advanced notice to river users, operators and agents that on 29th September 2019 between 06:30 and 12:45 hours, the river will be closed to navigation between Chiswick Bridge and the Old Royal Naval College, Greenwich.
Only those vessels participating in or supporting the event will be permitted to navigate during the river closures and navigation will be controlled and marshalled.
When finalised, further details will be advised in a subsequent Notice to Mariners.

OSEA ISLAND - RIVER BLACKWATER, ESSEX

A temporary floating jetty measuring 56.7mtrs in length has been installed alongside the Osea Pier on the south side of the Island. The Jetty which does not extend beyond the existing structure, sits within the line of the pier which is lit at night. The jetty is not for public use and mariners are advised to give the structure a wide berth owing to the nature of the mooring anchors that secure it in place. This will be removed by 14th August 2019. You are further notified that four temporary causeway markers have been installed along the course of the Osea Causeway. These are not lit at night and are marked by mooring buoys at high tide. These will be removed from site by the 13th August 2019. Exercise caution when navigating through this area.

Orwell Bridge Pier 10 Cathodic Protection Scheme

Commencing on or around 27th August 2019 and for duration of around 10 days work will be carried out at the base of Pier 10 of the Orwell Bridge for the cathodic protection scheme on the sheet pilings. These works will be carried out two hours either side of the Low Water both AM and PM. A Safety boat will be operating in the vicinity and further information is available from Orwell Navigation Service on VHF Channel 68. All vessels are requested to pass these operations at slow speed to avoid any wake or wash. Thank you for you cooperation.

ENGLAND-EAST COAST-ENTRANCE TO WELLS -NEXT-THE-SEA - NEW BUOY POSITIONS

Due to recent movement of the Northern end of the Wells entrance channel, buoy movements have taken place as follows with immediate effect on 8th August 2019. See the Temporary List for full details.

PORT OF WELLS - DREDGING OPERATIONS – this week

Blakeney Harbour

Mariners entering Blakeney Harbour should proceed from the Fairway Buoy directly towards the green unlit buff buoy in position N 52° 58.849’. E 000° 58.311’, passing at least 75M East of green Harbour Entrance buoy No. 1.
After reaching the green unlit buff buoy, immediately turn SW and head directly towards Harbour Entrance buoy No.2 and onward following the buoys as previously.
The harbour entrance channel is changing almost daily at the moment. Mariners intending to enter the harbour for the first time are therefore strongly advised to call 07771597985 for up to date pilotage information before entering.

Link to details - http://www.crossingthethamesestuary.com/page9.html

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

 

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