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SW Sunk 2024 Download V1.pdf

The South-West Sunk swatchway


Created 27th May, 2024

NEW - 2024

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On 25th May, 2024 we conducted a survey of the SW Sunk swatchway.  Conditions were good with light 5 to 8 kts winds and good visibility.  We collected data for just short of 4 hours and the chartlet is created using Surfer software and 13507 soundings.

There is a little change with the SW Sunk knoll continuing to advance to the North.  The advance over the past winter has been about 100 metres so I have adjusted the west and central waypoints.  The central waypoint has been moved north to distance it from the knoll and any tide effect.  On a flood tide a tide rip runs in front of the north and north-east face of the knoll and can be quite agitated.  We found as much as 4 kts of tide close by the edge of the knoll.  The west waypoint has also been moved slightly to the North.  This distances us from the tide rip and also 'cuts' the corner to or from along the east side of the East Barrow Sands.

Depths remain very good and with a comfortable width.

Havengore June 24.pdfJune

Havengore July 24.pdfJuly

Havengore August 24.pdfAugust

Havengore Sept 24-2.pdfSeptember

Times of opening of Havengore Bridge


Created 27th May, 2024

NEW - 2024

Click on each Image to Download PDFs

Jeff Peters, who sails out of the Orwell, has completed quite a lot of work to produce tables which show the times the Havengore Bridge and he is keen to share his work.   

Jeff has been sailing the east coast for 10 years on his classic cruiser Blue Shoal out of Orwell Yacht Club in Ipswich.   He started sailing at 11 with the first Rainham Sea Scouts before moving to Whitstable and joining the Yacht Club where he learned to race dinghies.   He stopped sailing when he went to University due to lack of funds but restarted in 1989 racing a Merlin Rocket and since 1997, Scorpions at Nottinghamshire County Sailing Club. 

Notes on the spreadsheet showing opening times for Havengore  bridge 


These sheets are the output from an Excel spreadsheet that Jeff produced partly out of interest, partly to be useful and partly as an intellectual exercise during some of the wetter days this winter whilst recovering from shoulder surgery. 

The Havengore bridge is generally open for 2 hours either side of high water Southend, during daylight hours (sunrise to sunset) and when the range is not active (the range is active Monday to Thursday 06:00 to 16:30, Fridays 06:00 to 12:30 and at other times that the range operators may choose).  The bridge has also been known to break down frequently.  The sheets should be treated merely as a quick check to see when the bridge may be open so that you can make your own assessment.  Of course, you will also need to determine whether there is sufficient depth of water for your craft in the prevailing sea state and that there is sufficient time for you to leave the restricted area before the range becomes live.  Generally, Jeff suggests you follow the guidance in the excellent East Coast Pilot. 

The sheets are based on a minimum predicted high water at Southend of at least 5m (this anecdotally being when there is 5 feet ( 1.5m ) of water over the Broomway and may be enough for shoal draft boats) so if the tide height is less that 5m the sheets indicate the bridge is closed even though it may be open. 

The sheets are also based on the latest sunrise and earliest sunset in the month. 

The sheets do show that there are occasions when the bridge is technically open for a very short period, perhaps just a minute or two, and it would seem unlikely that the bridge will be operational.  Jeff suggests if the sheet does not show the bridge being open at high water for at least an hour it would be better to contact Quintiq for confirmation.   The tables I have highlighted in red when the bridge is operational but not at high water. 

The data used for the sheets are: 

The operational criteria from Quintec who operate the bridge 

The tide tables produced by Port of London Authority for Southend 

The sunrise and sunset times for Southend from time and 

Wpt 54 on 2320424.jpg

Buoy changes at the Long Sand Head

NEW May 2024

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On 20th May, 2024 Trinity House have issued a Notice to Mariners confirming the compeltion of the changes at the Long Sand Head..  In the past 12 months, the Long Sand Head has continued gently, but persistently, to creep more to the northeast.  For us there is no crisis but heed the warning not to ‘cut the corner’.  For shipping using the Two-Way Route in and out of the Black Deep two changes have been necessary.

The changes are:

The creation of a new east cardinal buoy.  This will be positioned very close to current position of the Longsand Head north cardinal buoy.  The new buoy will be designated ‘East Longsand Head’.  Characteristics are shown in the chartlet.  Note it will have AIS.

The Longsand Head north cardinal buoy will be moved west and a little north.  As you will see in the chartlet the effect is to make the corner clear for shipping. Characteristics for this buoy will remain as at present.

CHA30 of 2022+.jpg

The revised Outer Crouch buoyage July 2022


Revised 15th June, 2021 and then18th July, 2022

NEW 2022

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Following the annual maintenance round, the Crouch Harbour Authority has altered the buoyage in the Swallowtail and Whitaker channels in June, 2021.  Effectively the overall arrangement for the buoyage remains as before except that three buoys have been withdrawn and some positions, light characteristics and names have been amended.

Subsequently, following a survey by the Port of London Authority, the CHA has moved the Swallowtail W to the west.

All moves incorporated in the chartlet

Spitway 2022 download page 1.jpg

The Spitway


Redrawn chartlet May, 2022

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This is a CTTE chartlet based upon resurvey on 30th May 2022.  Compared to 2021 there has been no significant changes over the past year.  Best water remains to the east of the Safe Water Buoys.

The transit details in page 2 have been corrected (04/04/23) courtesy of a reader.  Apologies.

Ray Sand 2023 Download V3.jpg

The Ray Sand

NEW 2023

Revised Ray Sand buoyage July, 2023

Extended chartlet (east side)

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We completed two surveys in August and September and the new chartlet has available. However, 0n 13th July, the Crouch Harbour Authority notified changes to the Ray Sand buoyage.

The Ray Sand buoy is re-located at 51.39'.84N, 001.00'.57E and the Ray Sand North (the Ray North) buoy is changed to an unlighted Yellow  Special Mark Pillar Buoy at 51.40'.81N, 001.00'.57E.

The chartlet has been changed to reflect the buoyage.

If wished, click on the image for the jpg version.

Little Sunk 2023 Download V1.png

The Little Sunk

Adjacent to the Barrow No 2 PHB

NEW 2023

Surveyed on 10th July, 2023

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This is a CTTE chartlet based upon a survey conducted on 10th July, 2023.  The Little Sunk (discussed on Page 24, 3rd Edition) is is usually a stable  crossing place and  it remains so in 2023.  Arguably it has lost 0.2m of depth but it has a controlling depth of 3.2m in the centre.

The crossing area is bounded by two wrecks to the south-west and the wreckage of the old 'Little Sunk' Beacon to the north-east.  All hazards are physically unmarked but there is ample room assuming a valid GPS signal over sand.

Foulger's Gat v2.jpg

Foulger's Gat


Click on the image to download the jpg.

While we were ‘criss-crossing’ over the Little Sunk I took the image of Foulger’s Gat.  Images of Foulger’s Gat at water level is quite difficult.  Close-to the Gat cannot be fully included, if it can be included, the camera is too far away.

For this image (and the technical), the camera is on the Little Sunk and was 3.067nM from the Long Sand Inner Safe Water Buoy, bearing 175°(T), Turbines A12 is 6.742nM from the camera.  Obvious the Long Sand Middle could not be visible.  The camera was pointed at 174°(T).

London Array Foulger's Gat 2019.jpg

The London Array Wind Farm and Foulger's Gat

Amended 28.01.2015

No subsequent changes up to July. 2023.

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This is CTTE’s image of the route through the London Array Windfarm .

Quarters Drawing 2019 Buoyage revision Mersea and Tollesbury Routes V2.jpg

Mersea Quarters

Buoyage as August, 2019

(Tollesbury No 4 now placed back)

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This is a CTTE chartlet based upon a survey completed during October, 2016.

Changes to depth across the Quarters has required a change to the buoyage which was re-laid in April, 2017.

Deep draught yachts (i.e. @2m draught) is recommended to follow the suggested route at LWS. Note this has been amended this month (May) to show the 'Obstn' SW of the Nass Beacon is not now annotated as ED.  It DOES exist and should be regarded as dangerous to leisure craft.

Tollesbury North and South Channels V2 2019.jpg

Tollesbury North and South Channels

Revised (2) August, 2019

(Tollesbury No 4 now placed back)

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This is a CTTE Chartlet based upon surveys in 2011 and 2012.

This includes the repositioning of buoys during 2019.

Leavings Final V1 2014.jpg

Tollesbury - the Leavings

Revised September, 2015

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This is a CTTE Chartlet based upon surveys in 2011 and 2012 with corrections to 2015.

Bradwell 2020 all data compromise V3.jpg

Bradwell Creek

New chart 2020

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Re-surveyed on 21st July, 2020 and redrawn.

The chartlet is drawn to Chart Datum.

I have  just added a table of Tidal Height predictions at Bradwell Creek which I hope will assist new visitors.

When printed the chartlet is best in A3  size.  It is difficult to include all the detail in A4.  None is omitted so it will be quite small.  Of course as a PDF or JPG it can be enlarged as you wish.

Lawling Creek 2014.jpg

Lawling Creek

Revised September, 2014

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This is a CTTE chartlet based upon surveys in 2011 and 2014.  It includes the additional buoyage put in by Maldon District Council for 2012.

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