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Britannia
ruled the waves when Queen Victoria came to the throne. Wooden
sailing ships were on the decline, making way for new maritime innovations
like the paddle steamer, Great Western, and the iron hulled,
screw-driven SS Great Britain.
The Admiralty had,
however, grown complacent about Britain's command of the seas.
Steam engines had
been installed in some wooden ships of the line, and smaller vessels
had been constructed with the new types of propulsion or iron hulls, but
it was a shock when in 1858 the French started building La Gloire,
the first armoured iron-hulled ship. La Gloire was launched in 1859
The original intention
of the French was to replace their whole fleet with iron hulls, but French industrial capacity
proved incapable of delivering enough iron.
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Construction

Horizontal
Trunk Steam Engine
Instead, almost all
ships had wooden hulls clad with iron up to five inches thick above
the waterline. Emperor Napoleon III was certain his projected new-look Navy could
out-manoeuvre and outgun the British.
News of the construction
of La Gloire and naval expansion across the Channel caused an
explosion of anti-French feeling in Britain. The Press stirred fears
of an invasion.
Prince Edward asked
the Admiralty what it was doing to match this "new engine of war".
Surveyor of the Navy, Admiral Sir Baldwin Wake Walker, said he believed iron
hulls would never replace wooden ships!
Iron-cladding the
fleet was the simplest option, but Sir John Pakington, the First Lord
of the Admiralty, supported the iron-hull lobby.
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