Tag Archives: lock

Looping the Loop

The proposed Doonbeg Ship Canal. Can anyone produce evidence to show that work ever started on it?

Garryowen and Dover Castle

In 1840 the rival steamers Dover Castle and Garryowen competed for traffic on the Shannon Estuary. While I know of no pictures of the steamers (if you know of any, please let me know), we have a reasonable amount of information about their operations. I discuss some aspects of those operations here. For an explanation of the page title, see here, but do not be diverted down this byway.

Deaths at Portlaw

On 7 April 2010 two canoeists were drowned at a weir in Portlaw, on the River Clodiagh. The Marine Casualty Investigation Board report on the matter has just been published. It says inter alia:

  • This weir cannot be run.
  • The design of this weir made it impassable regardless of the waterflow over it.
  • The weir at Portlaw is, by design, next to impossible to escape
    from without the use of lifebuoys and or an access ladder.

The report does not say who designed and built this weir or when it
was done. I have asked Waterford County Council for information.

According to the Irish Independent, the families of the canoeists are considering legal action.

Some news stories about weirs at Portlaw here, here and here.

Semper aliquid …

… novi Africam adferre, as my old grandmother used to say.

Waterways Ireland’s Marine Notice 45/2011 says:

[…] there will be restrictions on boat movements on Level C5 of the Grand Canal Circular Line between Leeson Street Bridge and Charlemont Bridge, Dublin over the next two weeks.

This is the first time I have seen an official name of any kind, much less an alphanumeric designation, applied to Irish canal levels (pounds). Is this a New Thing? And what are the names of the other levels, on the Grand and elsewhere?

I do hope the new naming of parts works better than this.

The disappearance of the Erne Canal

In February 2011 I provided a link to a website about the most insane inland waterway ever proposed in Ireland (at least in recent years: watch this space!), the “Erne Canal” that was to link Belleek to Ballyshannon and the Atlantic. The website seems to have disappeared or died, perhaps reflecting an outbreak of post-tigerian realism amongst the enthusiasts for northsouthery. But if it reappears, perhaps someone will let me know. I have copies of the various documents that were downloadable from the site.

Some hours later: I spoke too soon. See Comments below: the site is back up. Perhaps it was a temporary glitch on tinterweb.

The proposal is still insane, though.

Killaloe

The installation of the new pontoon, the flood control gates (flash lock) and the walkway continues apace.

Walkway (left) and pontoon from the lockhouse

The lower (nearer) section of pontoon may be for the lakeboat hire business

Boats mooring on the lower end of the pontoon, and turning to approach upstream, may get quite close to the bridge. The navigation markers may confuse too: perhaps they’ll be relocated.

The flood control gates (flash lock?)

From upstream (and uphill)

It all looks very nice. There are lots of people working on site.

Clontarf to Clondra

The Clontarf Yacht & Boat Club, recreating the Club’s 1925 trip, entered the Royal Canal sea lock from the Liffey on Saturday morning, 16 April 2011; some boats have reached Abbeyshrule this evening, and they hope to reach Clondra tomorrow evening, which will be four days from the Liffey.

That’s very fast: for Blanchardstown to/from Clondra, IWAI Dublin Branch estimated 5 days X 8 hours and I estimated 6 days X 7 hours, plus another day from the Liffey to Blanchardstown (12th Lock). I understand that CYBC has been doing very long days; I’ll get details later. In the meantime, well done CYBC.

Royal Canal shrinks

According to the 1994 Guide to the Royal Canal of Ireland, the smallest lock on the Royal, Lock 18, is 75 feet (22.9m) long, with a breadth of 13.3 feet (4.0m) and a depth of 4.7 feet (1.4m) on the cill.

According to Waterways Ireland, the navigational criteria for the Royal Canal are:

Length: 21m
Beam: 3.9m
Draft: 1m

L T C Rolt, in Green and Silver, said that the maximum size of vessel that could navigate the whole of the Royal was 70 feet by 13 feet 1 inch by 4 feet six inches “(theoretical)”. He said that lock sizes varied considerably, the shortest being 75 feet and the narrowest 13 feet 3.75 inches.

The navigational criteria for the Grand are:

Length: 18.5m
Beam: 3.9m
Draft: 1.2m (1m in Dublin)

So the Royal is throughout shallower than the Grand (except in Dublin) and the locks have got narrower and shorter.

 

Right Royal rant

I have written a page suggesting that, on good economic principles, the Irish government should use the Royal Canal as a giant rubbish dump.

This step would solve the impending shortage of landfill sites, avoid the need for an incinerator at Poolbeg and allow Keynesian bottles to be used to provide employment and stimulate the economy.

I have also suggested an alternative use for the Royal, but I’m afraid the alternative is almost laughably implausible: it is that folk should be encouraged to go boating on the Royal. I even suggest — I know it’s ridiculous — that some folk might like to complete the “Irish ring” or triangle: along the Grand to Dublin, to the Shannon along the Royal and then completing the circuit by travelling south along the Shannon.

If the numbers travelling were to justify the upkeep of the canals, large numbers of hirers would be needed, as would large numbers of hire boats. But not all of the existing hire firms are keen on the idea and none of them (as far as I know) is advertising the route. Waterways Ireland promoted it at a recent Birmingham boat show, but without the sort of detailed information that a would-be hirer would need.

It may be that Waterways Ireland is holding back until an adequate water supply for the Royal has been secured and until the obstacles at the Dublin end have all been removed. Perhaps it intends to persuade hire firms (new or existing) to provide packages; perhaps it will have a super new marketing campaign once everything is ready, and perhaps it’s just playing for time at the moment.

The problem with that approach is that it risks losing goodwill from potential hirers who, having heard of the reopening of the Royal, are now finding it difficult to arrange a trip.

One of the major sources of difficulty, as I see it, is the absence of information about what a trip might entail. Only the IWAI Dublin Branch seems to have made any effort to help folk who want to travel the route; neither the RCAG nor the Waterways Ireland site is of much use to anyone.

Accordingly, I have written a second page with some suggestions about how a hirer might tackle the trip. I still think it’s ridiculously difficult to plan, especially for a would-be hirer form overseas, and my information is not complete. I hope that folk will suggest improvements and help to tie down the details. And if anyone knows of a hire firm that is offering packages, with all the schedules worked out and the bookings made, do please give the details.

 

Big it up for Waterways Ireland

Waterways Ireland and the National Trails Office have come together to develop a technical specification, including code of practice and risk assessment for canoe and small vessel trails in Ireland.

The National Trails Office started work on the classification of water based trails in its publication,”Classification and grading of recreational trails.” The purpose of this tender is to develop this process further and produce a technical specification, including a code of practice and risk assessment for the future development of canoe and other small water vessel trails on the rivers and waterways of Ireland.

Tender notice on the eTenders Public Procurement website here, but you may need to be registered to get the bumpy.

This is a Jolly Good Idea and much to be encouraged. There are some suggestions for possible trails (mostly not on WI waters) on this site.