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Giant jetty sets sail to sub base | Giant jetty sets sail to sub base |
(about 1 hour later) | |
A floating jetty, the length of two football pitches, has begun its journey to its new home on the River Clyde. | A floating jetty, the length of two football pitches, has begun its journey to its new home on the River Clyde. |
The 200m long reinforced concrete structure will provide berths for six new Astute-class submarines at the Royal Navy's Faslane base. | The 200m long reinforced concrete structure will provide berths for six new Astute-class submarines at the Royal Navy's Faslane base. |
The Valiant Jetty will be kept in place by four piles at its corners, each as tall as Nelson's Column, allowing it to rise and fall with the tide. | The Valiant Jetty will be kept in place by four piles at its corners, each as tall as Nelson's Column, allowing it to rise and fall with the tide. |
Five tugs towed the structure on its nine-mile journey from Greenock. | Five tugs towed the structure on its nine-mile journey from Greenock. |
The £150m jetty, built by Amec and Morgan Est at the Inchgreen dry dock, weighs 44,000 tonnes, making it twice as heavy as a typical aircraft carrier. | |
Its hull is composed of 12 watertight cells, running its whole length, with concrete walls half a metre thick. | Its hull is composed of 12 watertight cells, running its whole length, with concrete walls half a metre thick. |
At each end, a heavy steel "forepeak" provides a mooring for the submarines. | At each end, a heavy steel "forepeak" provides a mooring for the submarines. |
The floating design was necessary because there is a 3m tidal range on the Gare Loch. | The floating design was necessary because there is a 3m tidal range on the Gare Loch. |