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  1. #1
    Join Date
    Nov 2002
    Location
    West Mersea
    Posts
    6,419

    Default Notice to Mariners Week 31

    UKHO Permanent/Preliminary/Temporary

    1. New Editions of ADMIRALTY Charts published 01 August 2019 - Chart 1610 - East Coast, Approaches to the Thames Estuary. New Editions of ADMIRALTY Charts published 15 August 2019 - Chart 1606 England - East Coast, Thames Estuary, Fisherman's Gat to Princes Channel; Chart 1607 - International Chart Series, England - East Coast, Thames Estuary, Southern Part (important that one); Chart 1609 England - East Coast, Thames Estuary, Knock John Channel to Sea Reach.
    2. ENGLAND - East Coast - Depths. - One small reduction of depth in the Thames Channel in Woolwich Reach east of the Barrier. At 5m, will not hinder leisure craft.
    3. ENGLAND - East Coast - Depths. - One small reduction of depth just north of the Thames channel off Tilburyness. Unlikely to hinder leisure craft.

    Local - loads and loads.

    1. GRAVESEND REACH TILBURY2 MARINE WORKS This notice supersedes L26 of 2019 and an earlier series of updaters: Work continues on the development of two new RoRo berths and a CMAT berth on the former Tilbury Power Station Jetty site. See detail and image on: http://www.crossingthethamesestuary.com/page9.html in the Temporary List.
    2. WOOLWICH REACH THAMES REFINERY INNER JETTY PARTIAL DECONSTRUCTION WORKS - On or about 29th July 2019, contractors working on behalf of Tate & Lyle will be undertaking deconstruction works at Thames Refinery Inner Jetty for approximately 4 weeks. The works will be undertaken from the crane barge ‘DAVE GIBSON’. The chartlet depicts the location of the works and the limits of the navigation exclusion zone defined by the red boxed area and can be found and downloaded from the above web page. Only vessels engaged in the works may enter the exclusion zone. London VTS will broadcast requests for vessels to “proceed with caution” or “proceed at slow speed”, as described in Permanent Notices to Mariners 4 of 2014 as required by the works. International Code Flags “Romeo Yankee” will be displayed when this is in effect. Further details will be broadcast by London VTS on VHF Channel 14.
    3. Harwich Maritime Festival Berthing arrangements for Ha’penny Pier pontoons Saturday 27th July 2019 - Mariners should note that in order to maximise the number of vessels accommodated on the Ha’penny Pier pontoons on the day of the Harwich Maritime Festival, Saturday 27 July we are asking all visiting vessels to make visual contact with the on duty Pier Masters before entering the inner pontoon entrance. If a space is available, the Pier Masters will direct vessels to an allocated berthing position - see the additional instructions in the Temporary List in the above quoted page.
    4. River Medway - CHANGES TO NAVIGATION MARKS - The following Navigation Mark has been discontinued: Aid: N16410 Blackstakes Racing Marker, Type, Character: Unlighted Buoy | Can Y, Position - Latitude : 051 ° 25.566 N - Longitude: 000 ° 42.805 E Datum: WGS84 Location: Saltpan Reach
    5. RIVER MEDWAY – MEDWAY APPROACH CHANNEL - SS RICHARD MONTGOMERY WRECK SURVEY - EGS International Ltd. will be undertaking, on behalf of the MCA and Receiver of Wreck, a detailed sonar survey of the SS Richard Montgomery wreck and have obtained permission to enter the prohibited area. Marine operations will be running from around the 1st August 2019 with expected completion by the 4th September 2019 (weather dependant). All survey work will be carried out by the EGS Watchful (callsign MAQK4; MMSI 232006596; fitted with AIS Class A) who will be keeping a listening watch on VHF Channels 16 & 74. Image and chartlet in the above quoted page in the Temporary List.
    6. Wallasea [CROSSRAIL] Commercial Jetty – Decommissioning and Removal - Mariners are reminded of Notice to Mariners No 18 of 2019 dated 12th June 2019. Work on Wallasea [CROSSRAIL] Commercial Jetty in approximate position: 051˚ 37.041N – 000˚ 50.800E is scheduled to commence on Monday 22nd July 2019. The works are estimated to last for approximately 5 weeks. All vessels navigating in the vicinity and passing the operation are requested to do so at a safe distance and with minimum wash and at a speed no greater than 8 knots. Your cooperation in this matter is appreciated.
    7. Swallowtail West Lighted Buoy, River Crouch - Swallowtail West Lighted Buoy in position: 51˚ 40.043’N 001˚ 02.661’E is off station.
    8. LOWESTOFT APPROACHES, STANFORD CHANNEL – STANFORD LIGHT BUOY UNRELIABLE - the Stanford Port hand light buoy, approx. position 51˚ 27.37’N, 001˚ 46.68’E, is currently unreliable. The light character is reported as irregular. Mariners are requested to navigate with caution in this area. Notice will be issued when the light has been reinstated.
    9. PORT OF WELLS - ENTRANCE CHANNEL - 1) REMOVED OFF STATION (Port Buoy) Station: Outer South 52.59'.320N 000.50'.744E 2) NEW BUOY ON STATION (Starboard Buoy) Station: West Outer Position LAT 52.59'.320N LONG 000.50'.642E Characteristics: Green Starboard FL (3).G.3s

    10. KING'S LYNN CONSERVANCY BOARD. - Approaches to King’s Lynn - Amendment to Buoyage - due to changes in the profile of the approach channel the following amendment will take place on or about 23rd July 2019: No. 11 light buoy to be moved 145m x 140°(T) to 52° 52’.465N 000°21’.800E. Mariners are requested to give the buoying vessel “St Edmund” a wide berth and pass at minimum speed whilst works to move the buoy are being undertaken.

    That's it. Havengore working, London Array have issued a NtM about cleaning the transition thingies but I can't find it. I imagine there would be a exclusion round the cleaners.

    That's it. Oh, have done a re-survey of the Ray Sand. The chartlet will be finished by the middle of the week, one further check to be finished. Best water is along the 1 degree meridian which has no more than 1.3 drying. In line with the Safe Water marks have a lump of sand drying 2.1m at chart datum.
    www.crossingthethamesestuary.com

  2. #2
    Join Date
    Oct 2006
    Location
    Bradwell and Leigh-on-Sea
    Posts
    14,483

    Default Re: Notice to Mariners Week 31

    Thanks Roger. Very timely as I'm crossing the Raysand tomorrow. 1 degree it is.
    Not all who wander are lost

  3. #3
    Join Date
    Nov 2002
    Location
    West Mersea
    Posts
    6,419

    Default Re: Notice to Mariners Week 31

    Good oh.
    www.crossingthethamesestuary.com

  4. #4
    Join Date
    Aug 2007
    Location
    Suffolk
    Posts
    5,162

    Default Re: Notice to Mariners Week 31

    Thanks for that. Interestingly we heard a fishing boat calling Dover CG to report that the Swallowtail buoy had “migrated” about 3/4 mile from it’s proper position. It sounded as if that was the first report.

  5. #5
    Join Date
    Nov 2002
    Location
    West Mersea
    Posts
    6,419

    Default Re: Notice to Mariners Week 31

    3/4 of a mile is quite a distance relative to the Swallowtail. Given the weight of the weight, one assumes the chain parted?

    Trinty House 1 2011 031 by Roger Gaspar, on Flickr

    That was for the Whitaker Channel buoys but the Swallowtail buoys are the same size I think.
    www.crossingthethamesestuary.com

  6. #6
    Join Date
    Oct 2006
    Location
    Bradwell and Leigh-on-Sea
    Posts
    14,483

    Default Re: Notice to Mariners Week 31

    Quote Originally Posted by tillergirl View Post
    Good oh.
    We had a rocket across today but when you are sailing at 5.9knots it is a bit of a shock to 0.3m under my 1.7 keel. This was about 3/4 across on the 59.97 meridian at 1450 this afternoon. Perhaps we caught the edge of that -2.8 and should have been a little further east. Anyway it was fab and turning into the Blackwater with the tide at over 7 knots was marvellous. But that flog out the Crouch into 12 knots of wind and the tide is drudgery. 4 hours BYH to Bradwell on a wonderful day - brilliant.
    Not all who wander are lost

  7. #7
    Join Date
    Nov 2002
    Location
    West Mersea
    Posts
    6,419

    Default Re: Notice to Mariners Week 31

    Umm. Shouldn't have been as bad as that. Using live Walton data extrapolating at that time you should have had 3.576m of water - less 1.7 draft = 1.876 under the keel. Worse chart datum was 1.3 drying CD so 0.5/6 would be the best you could expect! That was quite early. Best we have a conversation: I am sure I have your number and email but pm me please. I am going down tomorrow morning for LW at 11 ish to take a chart datum reference - a call later?
    Regards Roger
    www.crossingthethamesestuary.com

  8. #8
    Join Date
    Oct 2006
    Location
    Bradwell and Leigh-on-Sea
    Posts
    14,483

    Default Re: Notice to Mariners Week 31

    Quote Originally Posted by tillergirl View Post
    Umm. Shouldn't have been as bad as that. Using live Walton data extrapolating at that time you should have had 3.576m of water - less 1.7 draft = 1.876 under the keel. Worse chart datum was 1.3 drying CD so 0.5/6 would be the best you could expect! That was quite early. Best we have a conversation: I am sure I have your number and email but pm me please. I am going down tomorrow morning for LW at 11 ish to take a chart datum reference - a call later?
    Regards Roger
    Ok
    Not all who wander are lost

  9. #9
    Join Date
    Nov 2002
    Location
    West Mersea
    Posts
    6,419

    Default Re: Notice to Mariners Week 31

    Confession. Roger was right. When I was saying I had said the sand was drying 1.3m worst along the 1 degree meridian, I have reviewed the 1000 soundings along the 1 degree meridian and I missed nine out of the 1000. In a bunch, the nine were drying 1.6m in the space of about 22.5 metres. That matching Roger's 0.3 under the keel exactly. So I am updating the draft chartlet and making it a final in a couple of days. Irrespective of the above, the 1 degree meridian is the 'best water' over the Ray Sand. At LW tonight 'Gladys' and I had a looksee and could see it was obvious, best water is east of the safe water buoys (they are on 000.59.500E). It did not look that east of the 1 degree meridian was any better. The Ray Sand Middle was nicely beached; loads and loads of seals on the sands.
    www.crossingthethamesestuary.com

  10. #10
    Join Date
    Jun 2017
    Posts
    593

    Default Re: Notice to Mariners Week 31

    Thanks Roger. I was getting stick about my navigation on Sunday because the Swallowtail wasn't where I said , or even anywhere. Nice to know it wasn't my fault, but I'm still wrong! Now did I miss the NTM about Sunken Buxey? That seems to be missing.
    Last edited by Dan Tribe; 24-07-19 at 20:53.

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