Notices to Mariners - Week 13

tillergirl

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1. DOVER STRAIT - NM Block. Depths. -
Six reduced depths in the West Hinder and Sandiettie TSS and a new UKHO block around the Calais Approche west cardinal buoy. This is deep water so should not hinder leisure craft. 2 reductions just south of the Fairybank S. south cardinal buoy and 4 reductions in the Sandiettie TSS in the junction area with the West Hinder TSS. Ample water also around the Calais west cardinal.
2. ENGLAND - East Coast - Buoy. - The North Scroby north cardinal buoy has been moved a small distance to the north. The North Scroby sands break heavily.
3. ENGLAND - East Coast - Depths. - A reduction of depth, three of which are in the ‘turn’ of the Long Sand Head two-way TSS. Whilst for us there is ample water, for shipping the reductions are dramatic down to 9.9m. We can expect a move of the Long Sand Head cardinal buoy before long. Do not cut across Long Sand Head. (There was a reduction of depth by NTM 29/2024 in the same area so that is included in the image).
4. NORTH SEA - Netherlands Sector - Legend. - New legend recording an historic wreck close east of the Westhinder south cardinal buoy. The wrecks adjacent were added in the image vide NtM 766/2024.
5. ENGLAND - East Coast - Buoy. - This notice applies only to the small scale chart of the whole Thames Estuary (SNC 1183). The change is the light characteristics of the Sunk Centre safe water buoy. I believe most charts are already correct. Even Navionics is correct! :eek:
6. ENGLAND - East Coast - Depths. -
One single significant reduction of depth off shore north of Great Yarmouth. The reduction is just north of an outfall pipe. The end of the outfall is marked by a lit port hand buoy which also marks the lateral edge of the Caister Road.

Local

1. RIVER THAMES - HALFWAY REACH - DIVING OPERATIONS -
On or around 18th March 2024, marine contractors working on behalf of City of London Corporation will commence diving operations at the upriver end of Hanson No. 4 Jetty in Halfway Reach. Diving operations will take place around the times of slack water. Works are expected to last approximately 3 days. Diving Operations will take place from the Multi-Cat “Emilia D”, and works will include, but not be limited to, lifting operations and removal of grouting lines using underwater burning equipment. Requests for vessels to ‘proceed with caution’ or ‘pass at slow speed’ will be made by London VTS on VHF Ch.14, in accordance with the Port of London Authority’s Port Information Guide, under ‘London VTS’, Section 4. When diving is taking place the dive platform will display International Code Flags ‘Romeo Yankee (RY)’, ‘Alpha (A)’ and a red flag in accordance with Byelaw 33 as appropriate. The chartlet shows the location of works. Further details will be broadcast by London VTS on VHF Channel 14 as required.
2. RIVER THAMES - SEA REACH - OIKOS JETTY NO. 1 WORKS - on or around 15th March 2024 contractors instructed by Oikos Storage Ltd. will commence works at Oikos No. 1 Jetty. The general location of the works is indicated by the red box on the chartlet. The works comprise of reinstating a component to the Marine Loading Arm, by use of a crane on the jack-up barge ‘TOPJACK’ alongside the jetty face. Any requirements for passing vessels to Proceed with Caution or At Slow Speed will be made in accordance with the procedures set out in the Port of London Authority’s Port Information Guide, under ‘London VTS’, ‘Section 4’ with the International Code Flags ‘Romeo Yankee’, which are illustrated, displayed.
The display of these signals will be in addition to any lights or shapes required under local regulations and the International Regulations for Preventing Collisions at Sea. Further details will be broadcast as appropriate by London VTS on VHF channel 68 and/or 69.
3. HARWICH HARBOUR - Dredging Operations – Siskin, C-Force & Sospan Dau - Mariners are advised that dredging operations are taking place as follows:
➢ Siskin (IMO: 9563201) – have extended their current agitation dredging operations until approx. 20 March 2024 – around Harwich Haven, Port of Felixstowe berths and the Harwich Deep Water Channel.
➢ C-Force (IMO: 9850305) – will commence plough dredging operations on approx. 18 March 2024 for around 2 weeks. Work will mainly be focussed in the main channel around the Beach End area.
➢ Sospan Dau (IMO: 7711062) – will commence trailing suction hopper dredging on approx. 15 April 2024 for around 3 - 4 days. Maintenance dredging will be taking place in the Harwich Haven and around the Port of Felixstowe, with material disposed to the beneficial sites in the River Stour and Orwell (see diagram).
4. Reduced Depths – Harwich Harbour – Grisle to Babergh - a recent survey has identified reduced depths in Harwich Harbour. The minimum depth is now 15.0m below Chart Datum in the harbour area between the Grisle Buoy and
the Babergh Buoy. See chart extract for further information (on the below quoted web page you can downoad the 3 chartlets). Maintenance dredging works are currently underway to restore the navigable depth and a further notice will be issued once this work has been completed. For further information contact the Harbour Master Team at Harwich Haven Authority (+44 1255 243030).
5. River Medway – Chatham Dock - Temporary Suspension of Service - due to an unforeseen issue identified with the north lock outer caisson, Chatham Docks will be closed to navigation and unable to accept any vessel movements until further notice. The cause of the issue is currently subject to an engineering inspection, as soon as the scale of the issue is ascertained a further notice will be promulgated updating stakeholders with expected timescales for rectification.
6. PORT OF GREAT YARMOUTH - Bathymetric Survey Works - Outer Harbour - Survey Vessel RS 11 will be conducting bathymetric survey activity within Great Yarmouth Outer Harbour 18/03/2024. Due caution should be exercised by all vessels operating within the Outer Harbour by maintaining safe distance. RS 11 can be contacted on VHF Ch12. 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 Outer Harbour prior to doing so. For further information please contact Great Yarmouth LPS on VHF Channel 12 (callsign ‘Yarmouth Radio’) or 01493 335511.
7. PORT OF GREAT YARMOUTH - Herring Bridge not fully operational - Herring Bridge, owned and operated by Norfolk County Council, is not fully operational. All river users are advised to contact Herring Bridge Control for further information if a river transit is required. This Notice to Mariners will be updated on confirmation from Norfolk County Council that the bridge is fully operational. Contact details: Telephone: 01493 448448 Email: bookings@herringbridge.com
VHF CH 12
8. Maintenance Works Ipswich Lock - Tuesday 19th March 2024. - Work will be undertaken between 0800 and 1700 on the East Inner Lock Gate. The work being undertaken is to change the East Inner lock Gate hydraulic cylinder.
During this time the lock will be restricted to a 1 gate operation. ONS will always monitor VHF CH 68 and can provide updates as requested.
9. Approaches to Kings Lynn. - Alterations & additions to Buoyage: Nos 21, 22, 23 & “B” buoys. - due to changes in the approach channel the following alterations to buoyage has been completed on 18.03.24.
a) No 22 (Fl Q. Red) Light buoy moved to - Lat 52° 50.419’N Long 000° 21.716’E.
b) No 21 (Fl(2) G 4s) Light buoy moved to - Lat 52° 50.391’N Long 000° 21.724’E.
c) No 23 (Fl G 3s) Light buoy moved to - Lat 52° 50.225’N Long 000° 21.758’E.
d) “B” buoy (Fl Yellow 2s) established in position - Lat 52° 50.538’N Long 000° 21.705’E.

Find the chartlets on: Notices to Mariners. Select the Local Authrotiy Page for the Local notices.

That is it. :)
 
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