Jump to content
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble

NEW: Following member feedback, we now have a Mooring & Marina Review forum. Post your review here.

DaraHerlihy

How much tolerance do you need below the listed max dims of a canal?

Featured Posts

Hello Canalworld!

I'm looking at buying a Dutch Barge to use as a residence and cruise the London waterways. I've identified a ship that meets a lot of my desired criteria however some of its dimensions are very close to the listed max of the canals.

How much tolerance do you think I'd require (given water levels fall in summer etc) below the listed max of the canal on the Canal & River trust website? The length and width I figure I'll be okay with. Its the airdraft and draft I'm most concerned about.

Will I just be constantly running aground/getting stuck between bridges with the below dims or is there a certain amount of tolerance already accounted for here?

Boat:
length 21.03 x 3.49m
Airdraft: 2.15m
Draft : 1.17m

Canal
21.3 x 3.88m
Airdraft: 2.2m
Draft: 1m

Thanks for sharing your experience

D

Share this post


Link to post
Share on other sites

I would suggest that with that draft you will have major problems if you try to use it on the canals. The air draft is very dependant on shape so bridges and tunnels are very arched 

Share this post


Link to post
Share on other sites

Welcome, Dara.

You'll meet a few dims on the waterways, some of whom may be called Max. But, assuming that you meant "maximum dimensions", I am not sure that that will be your principal concern: it will be the stopping bits which may present more problems, as moorings, especially for such an enormous craft, can be hard to come by. If by "London Waterways" you mean the Thames, that would be a more suitable home patch for a craft of those dims - whoops, dimensions.

 

However, that's second-hand information, and I'm sure that members with close experience of London's canals will be along shortly.

Edited by Athy

Share this post


Link to post
Share on other sites

I wouldn't trust in any way, shape or form the dimensions as quoted by C&RT.

 

My local river is dredged to 2 metres (6' 6" ) minimum.

My draft is 4' 6" (with full tanks) and I regularly hit the bottom.

 

C&RTs figures are an 'aspiration' rather than fact.

 

Is your air-draft with full tanks ? how much higher do you float with part filled or nearly empty tanks (water, fuel and toilet) I'd suggest that the 0.05m is far to close and you will damage the boat, or get stuck.

 

Is you draft with full tanks or with empty tanks ?

What is the difference in draft ?

 

Your draft appears to be 170mm (6 1/2") more than the 'best' depth of the canal NO-WAY will you float, let alone 'cruise'.

Edited by Alan de Enfield

Share this post


Link to post
Share on other sites

It wont fit our imperial sized canals, its a metric ship.

And it is a ship not a boat I think.

  • Haha 1

Share this post


Link to post
Share on other sites

Thanks for the responses guys......... I'm looking forward to taking my rightful place amongst a community of dims :)

 

The size of the boat (its a luxe motor) I lifted from a hull report so would vary with full tanks for sure (it has 2000 litre water, 1500 diesel yikes!)

 

I think I'm getting the picture here. I'll need at least a few 100mm to play with. 

 

There's also a submarine I've seen on Apollo Duck........... I think it could work on the canals ............ 

Edited by DaraHerlihy

Share this post


Link to post
Share on other sites
3 minutes ago, DaraHerlihy said:

1500 diesel yikes!

Just a small tank then !

My fuel tankage is 2,800 litres which is why I always quote my draft 'with full tanks' as 2.3 tonnes does make a difference.

Share this post


Link to post
Share on other sites
1 hour ago, DaraHerlihy said:

Thanks for the responses guys......... I'm looking forward to taking my rightful place amongst a community of dims :)

 

The size of the boat (its a luxe motor) I lifted from a hull report so would vary with full tanks for sure (it has 2000 litre water, 1500 diesel yikes!)

 

I think I'm getting the picture here. I'll need at least a few 100mm to play with. 

 

There's also a submarine I've seen on Apollo Duck........... I think it could work on the canals ............ 

Thanks for taking criticism in good part!

The type of boat which you're talking about can be beautiful; but they weren't made for the English canals, nor the English canals for them. You would struggle to navigate along them, and you might well find that the natives became restless as you approached.

 

Perhaps more practical would be

 

either

- a narrowbeam "Dutch barge" style narrowboat. There are quite a few about, and they do fit the canal system, though you might have to take the wheelhouse down to get under the bridges in some areas.

 

or

- the boat of your dreams, but in a suitable place. The Thames would have plenty of room for her, and I believe that the navigable Northern rivers would too. Then thefe's France, Belgium, and of course the Dutch canals.....it depends on whether you're attached to a particular area by work or family, or whether you're a free agent.

Share this post


Link to post
Share on other sites

And when you have torn a sodding great hole in the bottom on lost safes ford sierras and the lock furniture, tree is no dock big or deep enough.

the grand union was built for the English narrow boat... many are available.

 

  • Greenie 2

Share this post


Link to post
Share on other sites

Agree with most of the above.

 

Anything that genuinely draws more than 1 metre will be very hard work on the canals in and around London.

 

Be aware also that that theoretical 1 metre is only available if levels are at their maximum.  If you study things like the "London Boaters" Facebook page you will regularly see warnings/complaints about pound levels up to a foot or below where they should be.

Even if you ignore draught, if you intend to "continuously cruise" it will be incredibly hard to find moorings for a full length wide beam in the popular locations, (and just about anywhere where it's possible to moor t all are now "popular locations"!)

  • Love 1

Share this post


Link to post
Share on other sites
7 minutes ago, alan_fincher said:


Even if you ignore draught, if you intend to "continuously cruise" it will be incredibly hard to find moorings for a full length wide beam in the popular locations, (and just about anywhere where it's possible to moor t all are now "popular locations"!)

 

I was thinking of posting this point too, and to point out there is a steady stream of large new boats being launched and few ever being removed from the canal so the situation is steadily getting worse and CRT are powerless to prevent the canals filling up with ever more boats.

 

 

Share this post


Link to post
Share on other sites

Well done for checking. It's not feasible. Not only won't you be able to move far underway you will be regarded as a pain in the ass by other users. Have a walk down the London Waterways and see how much room there is.

Share this post


Link to post
Share on other sites
13 hours ago, mark99 said:

Well done for checking. It's not feasible. Not only won't you be able to move far underway you will be regarded as a pain in the ass by other users. Have a walk down the London Waterways and see how much room there is.

Nicely put.  We're right at t'other end of the Grand Union and there was a big widebeam up there last week.  It looked totally out of place on a canal which, despite later being upgraded to double width locks, was built for narrowboats. It drew a lot of attention and comment, none of it positive, and even a pair of canoeists expressed astonishment as they passed. As we motored along I tried to work out in many sections what I'd be able to do if I encountered one coming towards me and my conclusion was I had a choice of grounding under the offside trees or going alongside towpath side and let him work out how he got by. The latter is now my default plan on any such an occasion.

Share this post


Link to post
Share on other sites
6 minutes ago, Sea Dog said:

We're right at t'other end of the Grand Union and there was a big widebeam up there last week.  It looked totally out of place on a canal

I think this one took a wrong turn somewhere :

 

Image result for cruise ship in kiel canal lock

  • Haha 2

Share this post


Link to post
Share on other sites
31 minutes ago, Alan de Enfield said:

I think this one took a wrong turn somewhere :

 

Image result for cruise ship in kiel canal lock

That's the very one! :D

 

  • Greenie 1

Share this post


Link to post
Share on other sites

Dutch barges ( real ones ) vary considerably as far as dimensions are concerned. It took a lot of searching to find one that fitted the dimensions of the canals and rivers that I planned to cruise.

PETRA draws .8 of a metre but 1 metre at the skeg. She used to have a s/s water tank mounted towards the stern which had a capacity of 2500 litres which I changed for a poly one of 1200 litres, this made a small improvement on certain sections of canal where the skeg tended to drag the mud.

 

She ,like all Dutch barges, has round chines which is a great advantage over widebeams and square chined narrow boats on canals with a saucer shaped profile. 

The collapsible wheelhouse means that only the lowest bridges  ( less than 7 feet ) aren't passable.

At 20 m x 3.64 m she'll go anywhere on the Southern waterways with no problem.

 

You might find that the draft isn't as much as stated ( although 1.17 seems pretty precise ) and probably only refers to the skeg. I checked PETRA's while she was in the water with a broom and it certainly wasn't  1.25 as stated by the vendor!

If the wheelhouse isn't collapsible either avoid the purchase or budget to have it converted.

 

Keith

Share this post


Link to post
Share on other sites
On 13/04/2019 at 20:55, DaraHerlihy said:

Now all I can think about is "what's in the safe?!?!"

 

Yeah, that's not good. I'd like to do the K&A.........but not like that! ha

With a boat you describe you would never get near the bank on the K&a 

Share this post


Link to post
Share on other sites
On 22/04/2019 at 16:32, thebfg said:

With a boat you describe you would never get near the bank on the K&a 

No one gets near the bank on the K&A.

Then again it depends on which parts we're talking about.

 

Keith 

 

Share this post


Link to post
Share on other sites

You might be alright on navigating the Lee, Regents Canal and Paddinton arm put unless things have changed you will not get far up the GU (harefield?) and probably will not get up the Brent section of the GU unless there is a good flow on the river and getting near the bank to moor is anybody's guess. Depending on the shape of the superstucture you may also have problems with some bridgeholes. Bear in mind London is now a boat park not to be recommended unless you have a permanent mooring which are almost impossible to find for a boat of that size. Also bear in mind when navigating  a vessel of this cross section anything above about 2mph will cause so much backflow you are likely to upset other people a lot.

Share this post


Link to post
Share on other sites
On 15/04/2019 at 09:21, Sea Dog said:

......... the very one! :D

 

On 15/04/2019 at 08:48, Alan de Enfield said:

 

 

Image result for cruise ship in kiel canal lock

Now that's a ship

Edited by LadyG

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.