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Displaying items by tag: Silting

There are fears for the future of Sligo harbour (a commercial port) after it was revealed on Monday that it is full of sludge which would cost millions of euro to clear, money that’s not available and dredging is not viable to do according to a report.

Councillor Declan Bree told the monthly council meeting that he was astonished and dismayed when he read the dredging report on Sligo Harbour which was recently presented to members of the Harbour Advisory Committee.

The report states that last year’s underwater surveys show silt volumes at the quays have nearly doubled since the last survey in 2011 – from 5,500cu m to 9,600cu m.

“It states that because of the increased volumes of silt a new ‘Dumping at Sea’ permit will be required. It points out that the Foreshore Licence for dredging which was granted to the Council in 2014 is now expired and it says that an application for a new license will take at least 18 months to prepare and will cost in the region of €100,000 in consultants fees, studies and site investigations.

“It states the full dredging of the harbour and navigation channel would cost close to €10 million, and a reduced dredging scheme for a turning circle and a short length of the channel would cost just under €2 million.

Much more reports The Sligo Champion on the north-west port. 

Published in Dredging
Tagged under

The issues surrounding silting in the Irish Sea ferry port of Heysham appear to have been resolved.

Last week, the Minister for Infrastructure, Tim Crookall MHK , spoke with the Isle of Man Steam Packet Company regarding the problems that plagued the port over the last few weeks.

Silt build-up in the harbour affected several sailings between Christmas and New Year.

Journey departure times were moved around as the Packet made changes after reading the depth chart report at Heysham.

IOM Today has more on the north-west English port. 

Published in Dredging

Shipyards

Afloat will be focusing on news and developments of shipyards with newbuilds taking shape on either slipways and building halls.

The common practice of shipbuilding using modular construction, requires several yards make specific block sections that are towed to a single designated yard and joined together to complete the ship before been launched or floated out.

In addition, outfitting quays is where internal work on electrical and passenger facilities is installed (or upgraded if the ship is already in service). This work may involve newbuilds towed to another specialist yard, before the newbuild is completed as a new ship or of the same class, designed from the shipyard 'in-house' or from a naval architect consultancy. Shipyards also carry out repair and maintenance, overhaul, refit, survey, and conversion, for example, the addition or removal of cabins within a superstructure. All this requires ships to enter graving /dry-docks or floating drydocks, to enable access to the entire vessel out of the water.

Asides from shipbuilding, marine engineering projects such as offshore installations take place and others have diversified in the construction of offshore renewable projects, from wind-turbines and related tower structures. When ships are decommissioned and need to be disposed of, some yards have recycling facilities to segregate materials, though other vessels are run ashore, i.e. 'beached' and broken up there on site. The scrapped metal can be sold and made into other items.