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Naval Industry News - UK |
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Babcock fits forward island on HMS Queen Elizabeth Aircraft Carrier |
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island is a crucial component of the ship, containing the main bridge
and around 100 vital mission systems compartments. The event was witnessed
by the Secretary of State for Defence, Phillip Hammond, MP.
The circa 600 tonne forward island – which arrived at Babcock’s
Rosyth facility (where the carriers are being assembled) from BAE Systems
in Portsmouth on 11 February – was lifted into position on HMS
Queen Elizabeth’s flight deck by the massive Goliath crane, which
had a special 78 tonne lifting frame attached for the purpose. |
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Picutre:
ACA
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The lift process began with the attachment of the
crane to the lifting frame, and application of a percentage of the island
weight to the crane to confirm the predicted centre of gravity. After
some minor adjustments the crane took the full weight of the Island,
lifted it over the aircraft carrier flight deck and located it in its
final position. Although not the heaviest lift of the project, the island’s
geometry and shape presented significant challenges. Also demanding
was the alignment of the 2.4 metre diameter gas turbine exhausts which
were pre-fitted in the island and below in the ship superstructure.
The 22 metre high by 13 metre wide and 27 metre long Upper Block 07,
as the forward island is known, already has all consoles installed,
as well as 43km of cables and 3,101 pipes. The floor-to-ceiling windows
of the main bridge are up to two metres high, providing an exceptional
level of visibility.
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Picutre:
ACA
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With the island in place, the Long Range Radar (LRR) will now be installed
on top. This will be closely followed by a period of consolidation when
the island will be welded to the superstructure and mechanical and electrical
systems installed. The later phase of the project will see the LRR set
to work and fully integrated with the ship systems.
Uniquely, the QEC carriers will feature two islands. The second ‘aft
island’ is due to arrive and be installed by the end of July 2013
and will operate as an airport control tower to co-ordinate aircraft
movements. Both islands are designed with the ability to carry out each
other’s role in an emergency.
Commenting on the successful lifting of the forward island into place,
and the milestone this represents, Babcock QEC Project Director Sean
Donaldson said: “Seeing the forward island in position on the
flight deck marks a highly visible achievement in the assembly programme.
The month for lifting the island into place was set over three years
ago. Since then the island has been designed and constructed, the crane
put into place and the blocks that the island sits on assembled ready
to accept the island – a considerable achievement.”
Defence Secretary Philip Hammond said: "The addition of the forward
island is a significant milestone for HMS Queen Elizabeth, which is
now entering the final months of her construction. The workforce at
Rosyth should be proud of their involvement in developing the largest
and most technologically advanced warships the UK has ever had.
"The Queen Elizabeth Class of Carriers will be in service for up
to fifty years, providing the Royal Navy with highly versatile and potent
capability that will enable the UK to project its power and carry out
a wide range of tasks around the world."
The first of the two carriers, HMS Queen Elizabeth, will be structurally
complete at the end of this year, with the ship capable of ‘float
up’ in spring 2014.
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