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Displaying items by tag: Verolme Dry Dock

#capeclear – As Afloat.ie reported earlier this month, L&M Keating Ltd, a building and civil engineering contractor, successfully towed and installed the contractor designed 1000t reinforced concrete lock chamber for a new storm gate on Cape Clear Island, Co. Cork from its casting basin in Verolme Dry Dock in Cork Harbour to the island, a tow of approximately 100 kilometres. L&M Keating Director Richard Browne describes how the work was completed. 

Cape Clear is Ireland's most southerly island being 6 miles off Cork's Atlantic Coast in exposed waters just a few miles from the Fastnet Rock Lighthouse. To protect the islands boating fleet during severe storms the Irish Department of Agriculture Food and the Marine have commissioned hydraulically operated storm gates to enable the inner harbour to be rapidly closed off. These gates require a substantial concrete structure to accurately hold and align the gates, in a water depth varying from 4 to 8 meters.

In response to the Departments tender invitation L&M Keating Ltd. offered a novel solution involving the precasting of the lock in a dry dock in Cork Harbour and installing temporary steel stop logs to form an enclosed chamber that would float. This chamber was then towed to site and sank on to a prepared concrete base.

After a week of pre tow preparation in the dry dock involving the installation of a deck, emergency pumping arrangements, ballasting, fitting of navigation marks and sea fastening works the sea structure was towed to sea the morning of Saturday 27th September.

The chamber was towed by the 4,000hp tug "Celtic Isle" provided by the Mainport Group, and was accompanied out of Cork Harbour by the Port Authorities tug "Gerry O'Sullivan".
Once at sea the chamber was towed at an average speed of 3.5knts arriving at Cape Clear in the early hours of Sunday 29th. The tow was then transferred to the smaller vessels "Barracuda" Vincent O'Driscoll's tug boat and Diarmuid O'Donovan's boat "Souris", and was brought into its final position against temporary steel guides. As the tide dropped the chamber followed the guides down until it rested on a concrete bed prepared earlier by divers. Once on the bottom, the chamber was flooded to prevent it floating off again.

The works are part of a €4.3M development which includes a 70m slipway, automated hydraulic storm gates (12x8m) and reconfiguration of the existing harbour entrance.
Work now continues to tie the quay on each side of structure in to the chamber, seal anchor the chamber with grout and to install and the electrical and hydraulic system commences.

Published in Island News

About boot Düsseldorf: With almost 250,000 visitors, boot Düsseldorf is the world's largest boat and water sports fair and every year in January the “meeting place" for the entire industry. From 18 to 26 January 2020, around 2,000 exhibitors will be presenting their interesting new products, attractive further developments and maritime equipment. This means that the complete market will be on site in Düsseldorf and will be inviting visitors on nine days of the fair to an exciting journey through the entire world of water sports in 17 exhibition halls covering 220,000 square meters. With a focus on boats and yachts, engines and engine technology, equipment and accessories, services, canoes, kayaks, kitesurfing, rowing, diving, surfing, wakeboarding, windsurfing, SUP, fishing, maritime art, marinas, water sports facilities as well as beach resorts and charter, there is something for every water sports enthusiast.

At A Glance – Boot Dusseldorf 

Organiser
Messe Düsseldorf GmbH
Messeplatz
40474 Düsseldorf
Tel: +49 211 4560-01
Fax: +49 211 4560-668
Web: https://www.boot.com/

The first boats and yachts will once again be arriving in December via the Rhine.

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