tillergirl
Well-Known Member
UKHO Permanent/Temporary/Preliminary notices:
1. ENGLAND - East Coast - Depths. - One slight reduction of depth in the Yantlet Channel just north of the Tanker PHB. Unlikely to hinder leisure craft but not where we are supposed to be anyway.
2. ENGLAND - East Coast - Depths. - One reduction of depth at the north tail of the Whiting Bank, north of the NE Whiting east cardinal buoy. Sufficient depth of leisure craft but an area of overfalls on the ebb.
3. ENGLAND - East Coast - Obstructions. Depths. - Two reductions of depth over known obstruction and three reductions of depth all within the Anchorage in Fiddler’s Reach, River Thames, north east of Greenhithe.
4. ENGLAND - East Coast - Restricted area. Buoyage. - The four yellow special lit buoys marking the wreck of the SS Montgomery just outside of Sheerness have been temporarily moved further away from the wreck and the prohibited area commensurately extended. This is for survey purposes but we will have to wait to see if the temporary movements revert to the previous. Image displaying the moves at: Notices to Mariners
Local
1. Gravesend Reach - Denton Wharf: Diving Operations - commencing on Tuesday 7th April, and for a period of three days, diving operations will take place at upriver end of Denton Wharf as shown on the chartlet (in the local list in the above quoted web page). Diving will be taking place from vessel ‘THAMES SPIRIT’ which will be moored alongside the pontoon. While diving is taking place the following signals will be displayed:
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.
2. Gravesend Reach - Red Lion Wharf: Fender Repair and Structural Investigation - on or about Tuesday 7th April, contractors instructed by the operator of Red Lion Wharf will be undertaking Fender Repairs and Structural Investigation works. These works are programmed for a 5-week duration, with operations being completed between the hours of 0700hrs and 1800hrs on weekdays only. The chartlet shows the general location of the works, indicated by the red box. Works will be undertaken from crane barge “TMS MAVERICK”, to be positioned alongside Red Lion Wharf for the duration of the works, further supported by various Tugs and Safety craft. The works will include, but may not be limited to, diving operations, heavy lifts, core sampling and working at height in MEWPs. During these works, 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. When diving operations are in progress, in addition to ‘Romeo Yankee’ the following signals will be displayed. By day, International Code Flag ‘Alpha (A)’ and a red flag near the diver’s point of entry into the water. These signals are displayed in addition to any lights, shapes or other signals specified by the International Regulations for Preventing Collisions at sea and local regulations. Further information will be broadcast by London VTS on VHF Channel 68.
3. Sea Reach - LGW Manoeuvring Area and Outer Estuary: Seabed Sampling and Geotechnical Investigations - commencing late April 2026, for an estimated period of approximately 8 weeks, seabed sampling and geotechnical investigations will be undertaken in the London Gateway and outer
estuary areas. Activities will take place within the following areas:
London Gateway Approaches (Manoeuvring Area)
Yantlet Channel
Knock John Channel
Western approaches to the Sunk Inner Precautionary Area
A full description of works locations contains 15 pages so there is a full download with chartlets in the Local List in the above quoted web page.
4. Surveyed Depths – Mistley Quay and approaches - the latest hydrographic surveys showing depths at Mistley Quay and approaches (upper River Stour) which are published as follows: Charts & Surveys - Harwich Haven Authority.
The controlling depth for deep draught vessels navigating within this area should currently be taken as 0.8m below chart datum, plus height of tide. Contact Harwich VTS or Haven Pilots for further information regarding tidal windows. This local notice to mariners replaces 2026-09.
5. Halfpenny Pier Mooring and Leisure Facilities, Harwich - as announced last week - The seasonal leisure facilities will re-open from Wednesday 01 April to Saturday 31 October 2026. Ha’penny Pier will be manned by Harwich Haven Authority’s Duty Pier Master between the hours of
0830 and 1730 during the open season, including weekends and bank holidays. The Duty Pier Master can be contacted on +44 7748 154039 for enquiries or assistance. Download with full details of fees and facilities and Rules can be found in the Local List.
That's it.
1. ENGLAND - East Coast - Depths. - One slight reduction of depth in the Yantlet Channel just north of the Tanker PHB. Unlikely to hinder leisure craft but not where we are supposed to be anyway.
2. ENGLAND - East Coast - Depths. - One reduction of depth at the north tail of the Whiting Bank, north of the NE Whiting east cardinal buoy. Sufficient depth of leisure craft but an area of overfalls on the ebb.
3. ENGLAND - East Coast - Obstructions. Depths. - Two reductions of depth over known obstruction and three reductions of depth all within the Anchorage in Fiddler’s Reach, River Thames, north east of Greenhithe.
4. ENGLAND - East Coast - Restricted area. Buoyage. - The four yellow special lit buoys marking the wreck of the SS Montgomery just outside of Sheerness have been temporarily moved further away from the wreck and the prohibited area commensurately extended. This is for survey purposes but we will have to wait to see if the temporary movements revert to the previous. Image displaying the moves at: Notices to Mariners
Local
1. Gravesend Reach - Denton Wharf: Diving Operations - commencing on Tuesday 7th April, and for a period of three days, diving operations will take place at upriver end of Denton Wharf as shown on the chartlet (in the local list in the above quoted web page). Diving will be taking place from vessel ‘THAMES SPIRIT’ which will be moored alongside the pontoon. While diving is taking place the following signals will be displayed:
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.
2. Gravesend Reach - Red Lion Wharf: Fender Repair and Structural Investigation - on or about Tuesday 7th April, contractors instructed by the operator of Red Lion Wharf will be undertaking Fender Repairs and Structural Investigation works. These works are programmed for a 5-week duration, with operations being completed between the hours of 0700hrs and 1800hrs on weekdays only. The chartlet shows the general location of the works, indicated by the red box. Works will be undertaken from crane barge “TMS MAVERICK”, to be positioned alongside Red Lion Wharf for the duration of the works, further supported by various Tugs and Safety craft. The works will include, but may not be limited to, diving operations, heavy lifts, core sampling and working at height in MEWPs. During these works, 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. When diving operations are in progress, in addition to ‘Romeo Yankee’ the following signals will be displayed. By day, International Code Flag ‘Alpha (A)’ and a red flag near the diver’s point of entry into the water. These signals are displayed in addition to any lights, shapes or other signals specified by the International Regulations for Preventing Collisions at sea and local regulations. Further information will be broadcast by London VTS on VHF Channel 68.
3. Sea Reach - LGW Manoeuvring Area and Outer Estuary: Seabed Sampling and Geotechnical Investigations - commencing late April 2026, for an estimated period of approximately 8 weeks, seabed sampling and geotechnical investigations will be undertaken in the London Gateway and outer
estuary areas. Activities will take place within the following areas:
London Gateway Approaches (Manoeuvring Area)
Yantlet Channel
Knock John Channel
Western approaches to the Sunk Inner Precautionary Area
A full description of works locations contains 15 pages so there is a full download with chartlets in the Local List in the above quoted web page.
4. Surveyed Depths – Mistley Quay and approaches - the latest hydrographic surveys showing depths at Mistley Quay and approaches (upper River Stour) which are published as follows: Charts & Surveys - Harwich Haven Authority.
The controlling depth for deep draught vessels navigating within this area should currently be taken as 0.8m below chart datum, plus height of tide. Contact Harwich VTS or Haven Pilots for further information regarding tidal windows. This local notice to mariners replaces 2026-09.
5. Halfpenny Pier Mooring and Leisure Facilities, Harwich - as announced last week - The seasonal leisure facilities will re-open from Wednesday 01 April to Saturday 31 October 2026. Ha’penny Pier will be manned by Harwich Haven Authority’s Duty Pier Master between the hours of
0830 and 1730 during the open season, including weekends and bank holidays. The Duty Pier Master can be contacted on +44 7748 154039 for enquiries or assistance. Download with full details of fees and facilities and Rules can be found in the Local List.
That's it.