Category Archives: Engineering and construction

Quay

A quay on a tributary of the Shannon, with reeds in the foreground.

 

A Shannonside castle

Waterways trees

Nama to Nature has been planting trees at Keshcarrigan on the Shannon–Erne Waterway, along which far too many developers wanted to sell houses that would have fast boats parked outside. I don’t know whether my photo shows the Waterways estate or a different one.

Keshcarrigan September 2011

 

h/t Ireland after NAMA.

Thomas Omer in Athlone

Here is a new page showing the route of the old canal in Athlone, which was used before the Shannon Commissioners built the new lock, weir and bridge in the 1840s. The canal is easily accessible along most of its route, although some explanatory signs might be useful to call attention to notable features.

Weed

I said recently that the water level on Lough Derg was low, as a result of a dry winter. Barge Hawthorn now reports that the weir at Clondra (Cloondara) is dry and Waterways Ireland has now issued a Marine Notice (23/2012: not yet on the WI website, but it may be there by the time you check) saying:

Waterways Ireland wishes to advise all masters and users of the Erne System that following a period of dry weather the water levels on Lower Lough Erne are below those normally experienced at this time of year.

WI Conver weed boat (and dinghy) in dry dock at Shannon Harbour

Reliable and authoritative sources tell me that the water levels in themselves are not the only problem. The dry, warm winter is likely to encourage the growth of weed, especially on the shallower waterways, including the canals and Upper Lough Erne. It seems that chemical methods can no longer be used so mechanical cutting and harvesting is the only method available. That means machinery and manpower. And with reduced resources, it’s going to be hard to keep the weeds down.

It may be wise to practise a rain dance.

Support the Clones Canal

It was suggested to me today that, because some boating organisations want the Clones Canal, the project must be worthy of support. I find that argument less than convincing. If I offer someone the benefit of a sum of money, without charge, I will not be surprised if that person likes the idea — but that won’t show that it’s a good deal for whoever bears the cost.

In this case, owners of boats are being offered the benefit of €45 million, so it’s not surprising that they like the idea. But I think they should be offered a practical method of demonstrating the depth of their support.

Accordingly, I propose that owners of registered boats on  the Shannon and the Erne be offered the opportunity to pay half the €45 million cost (the other half could be raised from a levy on the publicans of Clones, the other main beneficiaries). If there are 10,000 boats, the charge per owner, spread over three years, would be no more than €750 a year. Willingness to pay would provide more convincing evidence of support and would also make the project better value for the taxpayer.

 

Clever chaps in Youghal

No, not the one in Cork: the one in North Tipperary.

Youghal Quay ~1900

Youghal Quay and Bay ~1900

Formerly used for landing turf from the west side of Lough Derg, Youghal Quay is now a swimming area.

Ladder and diving board. Note the barrier at the landward end

The business end of the barrier

The other side supports a seat

Nice idea.

 

 

 

 

Polluting the water

Mr Hogan said he had been negotiating with the European Commission in 2011 and 2012 to minimise the impact of new septic tank regulations.

That’s from this article in the Irish Times.

Why does this chap want to minimise the impact of his own department’s regulations? Is he not at all interested in water quality?

Angela, would you mind invading please?

 

Shannon 1 design

If you don’t like hanging around airports, Shannon offers you a choice: you can go and look at the estuary instead, which is much more interesting.

Shannon Foynes Port Company workboat Shannon 1 passing Shannon Airport; Ringmoylan Pier in the background

Shannon 1, the successor to Curraghgour II, is a Damen MultiCat.

Shannon Foynes Port Company has updated its website.

 

Royal Canal: speed of lock operation

From Robert Mallett MRIA, MSCEI “On certain improved Methods of constructing Valves or Sluices, as applied to Canal and Dock Gates, &c, and similar Works of Hydraulic Engineering” in The Architectural Magazine 1837.

 

A target for WI to aim for?