Trinity House Aids to Navigation Review

tillergirl

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Terry Corner is going to submit some comments to the RYA for feedback into the Trinity House 2010 review of aids to navigation. There is one proposal that affects the Estuary and that is the removal of the buoyage marking the Knob Channel. That is discontinuence of the NE and SE Knob, Tizard and the Shingles Mid, N, NW and Patch buoys. Seven in total.

As you will know since the removal of the North Edinburgh buoyage. the Knob Channel really doesn’t lead into any complementary marked channel. As it is at the moment anybody wanting to use the North or South Edinburgh has got to rely on GPS and also trust that the sands have not shifted much. Given that the Edinburgh Channels are arguably the most altered part of the Estuary in the last 80 years that trust could be said to be rather optimistic!

Analysing it from a yachting point of view it is only the Crouch or Suffolk based yachts that are likely to be effected. Since the closure of the SW Sunk, most Blackwater and Colne boats use Fisherman’s or Foulger’s Gat having crossed the Sunk either adjacent to the Barrow No 2 or the Sunk beacon. So, probably of the Essex based boats it is only those in the Crouch who use the Barrow Swatch or the full West Swin who might be affected. Those using the Barrow Swatch have the problem of where to cross the SW Sunk with its heaps of metal from the old beacon lying in wait for a ready bilge and those using the full West Swin down to the Mouse are, I guess, more likely to use the Princes Channel rather than to shape northwards a little again. So I think it’s pretty unlikely that this is going to have a major impact. It does of course give us an easy option to keep out of the Knock John if there is a lot of shipping about. I have to say though that I've never done that.

As for the Suffolk Rivers, there is a potential route to the Kent Rivers down the Black Deep, nipping between the Long Sand and Tizard (currently easy with the Black Deep No 12 and Tizard) into the Knob Channel. This puts them in good shape for the Spaniard to negotiate the Wind Farm. The proposed discontinuence would certainly make that a GPS exercise rather than a visual pilotage one but I guess it would be a fair argument for Trinity House to point out that its expensive buoyage for a few when the same vessels could clear the Knock John Channel and then shape for the Spaniard (or indeed use the Barrow Deep instead which is marginally shorter).

I would guess that these are pretty difficult proposals to argue against but it is a loss. Does anyone have any views that they would like to make. I will pass them onto Terry Corner so as to shape his response to the RYA.

There are, of course proposals in the same review to reduce Lowestoft Lighthouse to 18nm range, discontinue the red sectors of Southwold Lighthouse (expnding the white sector) and to discontinue Orfordness lighthouse.
 
Thanks Roger, I have already discussed and replied to Terry.
FWIW, I have suggested that there could be a realignment/reassignment of the current buoys to allow across sands passage, as you say.
I still think Tizard Bank is significant, and the crossing round the southerly end of the Sunk, but the buoys marking the southerly bank of West Shingles/Shingles Patch and the beginning of Long Sand could possibly ignore the Edinburghs entrance, and thus be spaced further.

I must say that it is always reassuring to buoy hop in murky viz or a steep chop and gives something visual to aim at.
I am afraid that having a permanent eye on the GPS is very wearing in close conditions, far better to have a transits plan sorted.

But, as I said to Terry, my discussions with Trinity/PLA re the replacement of the SW Sunk Beacon were polite, affable and firmly refused on fiscal grounds.
We leisure boaters don't contribute much in the way of light dues.

My will still requires that my ashes are scattered at the location of Edinburgh No1.:o
 
Fisherman's Gat is used by commercial shipping (and pay light dues) so I guess they get there from the SW via Knock John channel. Is there an argument to have buoys at SW / NE ends of the Knob shoal / Tizzard Bank so if commercail traffic misses the KJ or the port buoys are carried away then there is something to keep them off the shallows?

Like Mr FC in conditions of marginal visabilty I do prefer to buoy hop rather than trust everything to GPS so any that can be retained would be a bonus!

When changes like these are finally made, is there a review / survey from time to time to see how the sea bed has changed and if advantageous replace buoyage or is it a case of when it is gone, its gone for good?
 
Thanks. We have difficulty arguing that Trinity House should replace the SW Sunk beacon because as far as I can discover those beacons never marked anything significant and certainly never belonged to Trinity House. I believe they were erected for Admiralty Survey practice in the 50's which explains why the majority don't mark anything much - NW Long Sand, Lond Sand, Girdler etc and probably why there are two lines, one from the Cant to the Sunk and another from the South Girdler to the Long Sand with arguably a line from the Buxey nearly through the Whitaker to the old SW Sunk. Clearly a hole in this argument that they were not positioned to mark anything useful is the Barrow but whether that's the same 'installation' I don't know. The Buxey was certainly originally much earlier.

So since they out out of the way of commercial shipping, there isn't much pessure on them. I know that begs the question of why they maintain Hook Spit and East Last which certainly would be a loss to us. Back in the 30's though, Trinity House had a buoy each on the Knock John Swatchway and the Barrow Swatchway but they were known in some writings as Spoil Buoys so they presumably had something to do with poo dumping from London.

But once the Sunk falls over which prsumably being the same age as the SW Sunk, it could do anytime, there will be another unmarked pile of metal to avoid leaving only crossing between the Middle and Little Sunk. I wonder if the Knock John Swatch has come back?

I guess Trinity House will look back at the history of the Knob Channel and reflect that they put all that gear in when it was the major exit from the Thames to the North Foreland (7 fathoms against the Princes' 4) through the then very wide Edinburgh Channels which only had a smallish horse called the Shingles Patch with two and a half fathoms over it. Look at the Shingles now! I fear its an unrealistic argument - much though I don't like saying that. As you say we don't contribute a lot!

Why the Edinburgh No 1? Surely not to join that old wreck to become the plaything of codling and pollack?
 
"Fisherman's Gat is used by commercial shipping (and pay light dues) so I guess they get there from the SW via Knock John channel. Is there an argument to have buoys at SW / NE ends of the Knob shoal / Tizzard Bank so if commercail traffic misses the KJ or the port buoys are carried away then there is something to keep them off the shallows?"

How do you do that quote thing?

I guess if I were the Trinity House I would point out that there are a lot of buoys in a very short space in the Knock John. It would be interesting to know why they retained the Knob buoyage when they removed all the North Edinburgh stuff. One would have thought that nothing much as changed - well other than the financial climate.

My wife says I'm going to be scattered off St Peter's Chapel - a sort of Dengie Pie. Is there a pattern to this?
 
Ta Dah! :D

Just click the 'quote' button in the bottom right (SE) corner of the post you want to quote. You can then delete parts of the original text to only use the bits you want.

Smug look! :p

Oh that! Never read that bit. That's too obvious to mean anything.

Hangs head in shame.
 
Why the Edinburgh No 1? Surely not to join that old wreck to become the plaything of codling and pollack?

Back nearly 20 years about 3 years after when I started this sailing lark, I moved to Ramsgate., but I loved coming north up past the Tower (now sadly gone) and then the excitement of getting into Edinburgh Channel.
It was just there was so much depth in the Channel compared to the sands around it, and of course the back eddies meant that you got lifted against the tide, which was a bit bizarre. Also, you could see the wave pattern bending around the big curve.
Coming home, the back of the journey would be broken by the time of clearing the channel No 1 buoy, and the anticipation of the confluence of tides around North Foreland was something to look forward to.

I don't know, I just always felt it was a nice place to be.
 
I have to say one of my pleasures was Fisherman's Gat before it was buoyed. Aunty Decca used to find the entrance and then the Seafarer 5 used to show a steady 7 metres all the way through.

My last memory of the Edinburgh was a foul tide. Which surprised and annoyed me in equal measure. Annoyed me because it took half a lifetime to get through and surprised me as it seemed to fly in the face of the co-tidal charts. I remember a chum in company mistaking the NW Long Sand for the SW Sunk when heading north and trying to do the impossible!
 

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