Notices to Mariners Week 13

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UKHO Permanent/Temporary/Preliminary

1. ENGLAND – East Coast – Buoyage. (River Colne) – This Notice confirms the local Brightlingsea Notice in February this year. This re-positions four yellow buoys marking the new locations marking the extremities of the Fingringhoe firing range.

2. ENGLAND – East Coast – Buoyage. (Tiver Thames) – 4 large mooring buoys deleted in the Erith Reach, River Thames.

Local

1. Swallowtail No 1 Lighted Buoy, River Crouch – Mariners are advised that Swallowtail No 1 Lighted Buoy in approximate position: 51° 41.384’N 001° 08.200’E is unlit.
2. PORT OF GREAT YARMOUTH – Notification of Overside Works – Berth 10 – essential flood defence works are ongoing at Berth 10, with works being serviced by a floating work pontoon and safety craft. Personnel will be working overside and at the waterline. Works are scheduled to end around 9th April 2021. Mariners are advised to exercise caution when approaching or passing the work site, to keep well clear of the works area and to pass at the slowest safe manoeuvring speed. Swinging of vessels will not be permitted anywhere within the works area mentioned above. Mariners are reminded to maintain a listening watch on VHF Channel 12 at all times whilst within the Port of Great Yarmouth and to advise ‘Yarmouth Radio’ of their intention to conduct any manoeuvre within the Port prior to doing so. For further information please contact Great Yarmouth LPS on VHF Channel 12 (callsign ‘Yarmouth Radio’) or telephone 01493 335511.
3. PORT OF GREAT YARMOUTH – Notification of Diving Operations – Berths 13 and 31 – diving operations will be conducted at Berths 13 and 31 within the Great Yarmouth River Port commencing on Monday 22nd March, with completion expected on Sunday 4th April. The works are in support of the Great Yarmouth Third River Crossing project. Work will include investigation of riverbed areas adjacent to the aforementioned berths (see figure 1); and use of overside equipment. The International Code flag ‘A’ will be exhibited when dive operations are taking place and red flags will be exhibited marking the extremities of the works. A safety boat will be present when divers are working. The Dive Supervisor and safety boat will maintain a listening watch on VHF Ch12 whilst operations are taking place. Callsigns will be ‘‘RED7 DIVERS’ and ‘RED7 SAFETY BOAT’ respectively. Masters must obtain information from Yarmouth Radio on VHF Channel 12 before navigating past the work area, and before any movement or operation of engines or thrusters in the vicinity. Masters are advised to exercise extreme caution when approaching or passing the dive site, to keep well clear of the works area and to pass at the slowest safe manoeuvring speed. Swinging of vessels will not be permitted anywhere within the works area mentioned above. Please see chart extract in ther Local list at: Notices to Mariners showing the extent of the dive site. For further information please contact Great Yarmouth LPS on VHF Ch12, callsign ‘Yarmouth Radio’, or telephone 01493 335511.
4. RAMSGATE ROYAL HARBOUR – PORT LEAD LIGHTS – Ramsgate Port Lead Light units have now been reinstated. Notice to Mariners No 06/2021 is now cancelled.
5. Port of Wells – dredging
6. The River Great Ouse, South of King’s Lynn – Islington Pumping Station, Construction Works: Pontoon establishment and pile Cutting Operations – 
Notice to Mariners 26/2020 refers – additional works will be carried out associated with the construction of a new drainage pumping station with an associated outfall currently ongoing on the West Bank of the River Great Ouse at Islington, between the Smeeth Lode and Mill Basin outfalls, approximately 1000m north of the St Germans Bridge. These additional works will involve the mooring of a floating modular pontoon approximately 32 metres long by 10 metres wide with associated plant on aboard moored immediately adjacent to the newly constructed outfall spillway. Operations will include dredging using the pontoon mounted excavator, together with the use of cutting and burning equipment and the pontoon mounted hydraulic crane.
All river users, including swimmers and paddlers are to keep well clear of pontoon site at all times as unusual currents or eddies may be experienced and craft MUST proceed at minimum speed when transiting this area and avoid causing a wash.
Additional Warning signs will be displayed to the north & south of the works, and the extremities of the pontoon will be marked by flashing amber lights. Some operations will require the use of Divers and additional warning signs and restrictions will be required. These additional works are due to commence week commencing 22nd March and last for about 6 weeks. For further information please contact Balfour Beatty Project Manager on 07967 578420. NtM 26/2020 is still in force

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

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