Notices to Mariners Week 31

UKHO Permanent/Temporary/Preliminary

1. ENGLAND – East Coast – Depth. – Unusually for a NtM, this is an increase of depth very adjacent to the Oaze Yellow Special Buoy because it is in the main channel. Unlikely to hinder leisure craft.
2. ENGLAND – East Coast – Restricted area. – A new ‘no anchoring’ area in the River Thames, Bugsby Reach just south of the North Greenwich Pier.
3. ENGLAND – East Coast – NM Block. – A new UKHO block for two charts of the River Thames off Holehaven Point. One image shown but both can be downloaded via the button.
4. FRANCE – North Coast – NM Blocks. Restricted area. Note. – There are UKHO blocks for 5 charts affecting Calais and Boulogne. The two principal block are shown, all are included in the download.

All images of course indicating the changes. See: Notices to Mariners


1. Port of London – River Thames – AIDS TO NAVIGATION CHANGES – Following a previous review of navigation lights, the Port of London Authority, as the Local Lighthouse Authority, has consulted with Trinity House (the General Lighthouse Authority) and agreed a number of changes to Aids to Navigation (AtoN). These changes will have immediate effect. The Notice includes the detail of the change, position and an image showing location. If you go to the above quoted web site page, select the Local List and you will find a dowload button for the PDF.
RAMSGATE No. 5 BUOY – (Charted Position – – – Mariners are advised that this navigational buoy has been replaced and includes its top day marker. Therefore NTM 20/2020 is cancelled.
3. Port of Wells – dredging
4. Navigation Restriction due to Dredging Operations on the River Yare – Trowse Eye to Trowse Swing Bridge – dredging operations are programmed to commence from 17 August until 30 September 2020. During this period, dredging will be in operation between 0800 hours and 1600 hours daily, excluding weekends. The works may severely restrict the passage of vessels; however, the navigation channel will remain open but mariners must exercise great care whilst proceeding past the works. All equipment will be lit and signage will be in place to warn of restrictions and delays. Vessels should ensure that consideration for passage planning is taken and when navigating in this area.
5. One by me – Submerged Mooring – Mersea Quarters – A swinging mooring in a partial submerged condition in Mersea Quarters has been spotted today, Monday 20th July. Attention will be made shortly to resolve the problem but for the immediate time, care should be taken to avoid the mooring. Note that today at about two and a half hours after low water the mooring was just under the surface and later two hours later the mooring could not be seen. The position is on the southern side of the Quarters. On the northern side of the Quarters is another line of moorings which are fine and by avoiding the submerged buoy, keep close to the line of the northern moorings. Image shown in the Local list but is not very clear because ……. the submerged buoy isn’t very clear!

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