Let's start another new argument - deepest single lock

[magpie patrick]

55 minutes ago, Jen-in-Wellies said:

For an extreme example of a second set of gates for longer boats there are some in Yorkshire that have a set of gates for around 60' wide beams, but have had the chambers extended for much much bigger boats.

See Bramwith Lock and Doncaster Town lock for examples. Most are automated and use the big chambers for all boats, but Bramwith is still manual and you select the chamber for the size and number of boats using it.

 Does Doncaster have an extra pair of gates? I know Bramwith does and Sykehouse use to have - the middle gates at Sykehouse were pinned back several years ago. 

 

The gates at Tuel Lane are ekki so have many years left in them, but when the time comes I'll bet one set won't be replaced - a campaign will be needed to make sure it's the longer lock that is retained. 

[Jen-in-Wellies]

25 minutes ago, magpie patrick said:

Does Doncaster have an extra pair of gates? I know Bramwith does and Sykehouse use to have - the middle gates at Sykehouse were pinned back several years ago. 

My mistake. Doncaster town doesn't have the extra gates. You can see how the lock was extended, as the extension isn't in line with the original chamber. If it ever did have a short chamber option after extension, I don't know. I can't see it having a need for them, as the lock is straight off the Don, so water conservation is rarely an issue. Bramwith is all definitely still usable.

[Gybe Ho]

I know the answer to this one because I watch YouTube. The deepest lock is at the eastern end of the Rochdale, I forget its name but is does look more exciting than an adventure waterpark experience.

 

For brave girls only as shown in this video...

 

 

 

Edited March 5, 2025 by Gybe Ho

[TheBiscuits]

45 minutes ago, Gybe Ho said:

The deepest lock is at the eastern end of the Rochdale, I forget its name

 

Did you read this thread?

[Gybe Ho]

4 minutes ago, TheBiscuits said:

 

Did you read this thread?

 

Yes, I thought the purpose was to start an argument and I knew that any mention of YouTube is a red rag to the forum bulls.

[ditchcrawler]

Bl**dy h**l I have just given Gybe Ho a greeny 

[Gybe Ho]

6 minutes ago, ditchcrawler said:

Bl**dy h**l I have just given Gybe Ho a greeny 

 

Is that because in another thread I have "come out" as a 25 year old Irish Lesbian Buddhist CMer who has overstayed on a 14 day mooring by 9 months?

[dogless]

Speaking of arguments, I've been disputing with myself a small quandary that I'll open up to offers.

 

At the next blacking I'm having the bow thruster tube capped off .

 

Will this significantly alter the trim of the bow once back in the water ?

 

Part of me considered that the bow will be slightly lighter as the tube will be no longer full of water.

 

However I argue with myself that the tube isn't ever filled with water, rather water flows through it.

 

Anyone know ?

 

Rog

[ditchcrawler]

1 minute ago, dogless said:

Speaking of arguments, I've been disputing with myself a small quandary that I'll open up to offers.

 

At the next blacking I'm having the bow thruster tube capped off .

 

Will this significantly alter the trim of the bow once back in the water ?

 

Part of me considered that the bow will be slightly lighter as the tube will be no longer full of water.

 

However I argue with myself that the tube isn't ever filled with water, rather water flows through it.

 

Anyone know ?

 

Rog

You will displace more water , the area of the tube what ever that is .

[David Mack]

4 minutes ago, dogless said:

Part of me considered that the bow will be slightly lighter as the tube will be no longer full of water.

True.

4 minutes ago, dogless said:

However I argue with myself that the tube isn't ever filled with water, rather water flows through it.

If it is entirely below the water line it will be full of water.

 

5 minutes ago, dogless said:

Will this significantly alter the trim of the bow once back in the water ?

Will it alter the trim? Yes. Significantly? No. You won't notice the difference.

 

[ditchcrawler]

30 minutes ago, David Mack said:

  Will it alter the trim? Yes. Significantly? No. You won't notice the difference.

 

By about 16Kg

[billh]

On 04/03/2025 at 21:25, magpie patrick said:

 

I think it's Vinegar Lock on the Ashton Canal - the depths vary due to mining subsidence and a couple are well over 13 feet. I haven't looked up the exact depth though but 13 foot 10 inches rings a bell

 

 

The pound below 10 down to 9 is often short of water even if normal levels above 10 That can result in the lock depth being nearer 16ft. Opening the tail gate paddles quickly  produces a spectacular water display  and if you've nosed up to the tailgates, going up, the venturi(?) effect  will pull the bow of the boat  down  by a foot or so onto the rubble and debris  in the lock tail.

[MtB]

8 hours ago, dogless said:

However I argue with myself that the tube isn't ever filled with water, rather water flows through it.

 

Eh?

 

How can 'water flow through it' without the tube containing water?!

 

As others has said the tube will in future be filled with air instead of water, so you will get the weight of that tubeful of water now excluded in extra buoyancy at the bow. 1 kg per litre. So the 16kg extra buoyancy suggested by Ditchy sounds about right. No noticeable difference in practice, I'd suggest. Comparable perhaps to using up one bag of coal stored in the well deck. 

[magpie patrick]

12 hours ago, dogless said:

Speaking of arguments, I've been disputing with myself...

 

Taking forum debate to a whole new level! 😄 be careful not to offend yourself though, keep it civilised.... 

[1st ade]

13 hours ago, ditchcrawler said:

You will displace more water , the area volume of the tube what ever that is .

Pedant alert...

[ditchcrawler]

4 hours ago, 1st ade said:

Pedant alert...

Can't argue with that 

[cuthound]

22 hours ago, dogless said:

Speaking of arguments, I've been disputing with myself a small quandary that I'll open up to offers.

 

At the next blacking I'm having the bow thruster tube capped off .

 

Rog

 

Don't you just hate it when you have an argument with yourself and lose? 😂

[dogless]

Arguing with myself, I never have to admit I'm wrong cos some part of my argument may prove right 👍🏻

 

Rog

[Heartland]

I did think that there is one in Ireland that is deeper.

 

According to Pennine Waterways those in England are:

 

LOCK NAME	NUMBER	CANAL	RISE (CHANGE IN LEVEL)
Tuel Lane Lock	3/4	Rochdale	19' 8½"
Bath Deep Lock	8/9	Kennet and Avon	19' 5"
Middlewood Deep Lock	1/2	Manchester Bolton & Bury	16' 3" approx
Anthony Lock	77	Rochdale	15' 1½"

[PeterScott]

[MtB]

20 minutes ago, PeterScott said:

 

 

Is that Pigeons Lock on the southern Oxford? 

 

 

[magpie patrick]

21 hours ago, PeterScott said:

 

I think that's one of the locks at Cardiff Bay - two of the three can have a huge fall, I'm guessing in the region of 30 feet, the third has its floor rather higher.

 

Not convinced they're part of the inland waterway system though - they fail on both parts of that description!