Ephemera 9: the flash lock at Killaloe

As part of its new mooring scheme at Killaloe, Waterways Ireland has commissioned contractors (L&M Keating Ltd) to carry out various works including the installation of a lock at the upper end of the canal, beside the Phoenix boathouse and just downstream from the Pierhead. The lock is to control access to the canal; presumably the stop planks in the existing lock chamber will be removed, allowing boats to pass down under the bridge.

The lock under construction

As I understand it, this lock is to have a single pair of gates. Boats wishing to pass through will tie up temporarily and use a squawk-box (or similar technological marvel) to communicate with the bridge-keeper at Portumna, who will cause the gates to be opened and then, presumably, closed after the boat has passed through. This system will prevent the use of the canal by cads and bounders using jetskis, speedboats and other excrescences.

Stanked off and pumped out

However, the water through Killaloe Bridge has a gradient or slope, especially in flood and when Ardnacrusha power station is running. The canal above the lock will be at the higher level; the canal below the lock will be fed from the bottom end, where it rejoins the river. So is there not likely to be a difference in height at the lock? Is this the equivalent of a flash lock?

I’m sure there is an engineering answer to this; I would welcome enlightenment.

 

Ephemera 8: Tarbert

Tarbert Island

The Irish Times reports that:

AN BORD Pleanála has approved the application by Endesa Ireland, part of the Spanish energy company, to build a combined-cycle gas turbine power plant on the former ESB station at Tarbert, Co Kerry.

I presume that, when it says that “A submarine cable is to supply Moneypoint.” it means that a submarine pipe will do so: I imagine that the power station at Moneypoint is more likely to want gas than electricity from its rival across the estuary.

Tarbert is now the southern station for the ferries that cross the Shannon Estuary, but it has had a long history as an estuary port. Even before the first of the piers was built, Tarbert Roads provided a sheltered anchorage, and the estuary steamers adopted ingenious methods to get passengers and cargo from shore to steamer and vice versa.

Tarbert was also an important administrative centre and Tarbert Island (as was), which now houses piers and power station, had a Coast Guard station, a lighthouse, a signal mast and the largest of the six forts that guarded the Shannon Estuary. The ESB power station is built on the Ordnance Ground, right on top of the seven-gun battery, as you can see if you play with the Overlay feature on the Historic 6″ Ordnance Survey map.

Moneypoint had a large quarry; it may have been from there that Charles Wye Williams got the “marble” that he polished in the marble mill at Killaloe.

Saleen Pier at Ballylongford is covered here.

Ephemera 7

The view from Dromod 30 December 2010.

Dromod

The Swiss Army Knife is no longer sprawling across the canal above Noggus Bridge on the Grand: it’s parked in the middle of the canal, closer to the bridge.

Locks at locks

Here‘s a thing.

Clondra Lock

The lock at Clondra may be the only one on the Shannon that is in the same place, and doing the same job, since the days of the Commissioners of Inland Navigation in the middle of the eighteenth century. The lock itself has been refurbished several times, and in recent years the lock furniture has been altered to make it impossible for boaters to work their own boats through it. But it has a very interesting collection of gear and it is well worth using, even if you’re not going to the Royal Canal at Richmond Harbour.

No new thing

I’ve just been rearranging the parent-and-child relationships between some of my pages. No new material has been added. The main change is that I’ve moved some items from the heading “Irish waterways operations” to “Irish waterways furniture”. The “furniture” heading was originally intended for small-scale stuff like bollards and foot-boards but I’ve now included entire locks and so on there as well. Essentially, in “operations” the focus is on some activity; in “furniture” it’s on fixtures and fittings. Given that most users follow either direct links or searches, that won’t make any difference to most people.

 

Up the Suir

I don’t know if you remember, but a few months ago we had sunshine, and it was warm outside. Back then, at the end of May in fact, I went on the Industrial Heritage Association of Ireland‘s tour of Carrick-on-Suir, Clonmel and areas in between.

In Carrick, Ralph O’Callaghan showed us some of the sights and addressed the group in the Heritage Centre. Here are some of the things he showed us.

Ralph O'Callaghan shows a model of a yawl (a horse-drawn boat used to carry goods between Carrick and Clonmel)

This yawl is equipped for sand-dredging

Note the large rudder

The yawl

A steel shoe for one of the 30' poles used by Suir and Barrow boatmen

A hand-made net for snap-net fishing

After lunch, I was fortunate to be one of two people who got a trip in Ralph O’Callaghan’s canoe, from Kilsheelan upstream to the Anner bridge just downstream of Sir Thomas’s Bridge, which is itself downstream of Clonmel.

I have set up a small (approx 120-photo) slide show to give an idea of the conditions on the Suir at the time. The water level was low after several dry weeks, but the previous winter’s floods may have left more silt than usual. At any event, a successful passage required Ralph’s skills and his intimate knowledge of the river and its weirs. You can see some of the weirs, and the gorgeous scenery, in the show.

I am very grateful to both Ralph O’Callaghan and Fred Hamond for facilitating the boat trip and for sharing their immense knowledge of the Suir.

If you like interesting boats, you’ll like Ralph’s canoe.

An update on the Suir

I have updated my page about the River Suir above Carrick. I have added photos on some locations above Clonmel (Cahir, Athassel, Golden); I have also added a new section about the infrastructure of the navigation between Carrick and Clonmel. That section has benefited greatly from the information provided by Fred Hamond on the tour he organised for the Industrial Heritage Association of Ireland earlier this year. Several of the photos taken on the tour show warm, sunny weather. They will also, I hope, help to draw attention to the delights of the Suir.

Ephemera 6: canal stories

Two recent stories of people in canals in freezing weather. This one had a happy ending; this one didn’t.

 

Ephemera 5: a mystery

The Westmeath Independent reports on the opening of a new service block at Coosan Point:

Meanwhile, in Athlone, with a delicious irony that couldn’t have been lost on those in attendance, just as Ireland Inc was going down the toilet – the council in Westmeath was opening, yes, you guessed it, toilets!

At a low-key ribbon cutting ceremony, which suffered from unfortunate timing, and which was accompanied by more than a touch of farce, Waterways Ireland staff and Westmeath County Council management congregated on Monday last to officially open a new upgraded service block of toilets and showers at the Coosan Point amenity area.

Unfortunately the report does not say what the “touch of farce” was. Information welcome.