The Algésiras class was a late type of 90-gun ships of the line used by the French navy

French Navy

The French Navy, officially the Marine nationale and often called La Royale is the maritime arm of the French military. It includes a full range of fighting vessels, from patrol boats to a nuclear powered aircraft carrier and 10 nuclear-powered submarines, four of which are capable of launching...

. They were designed from the beginning to use a combination of sail and steam engine

Steam engine

A steam engine is a heat engine that performs mechanical work using steam as its working fluid.Steam engines are external combustion engines, where the working fluid is separate from the combustion products. Non-combustion heat sources such as solar power, nuclear power or geothermal energy may be...

 for propulsion.

After the breakthrough of the Napoléon, the Algésiras class was the improved designed which went into mass production.

• Algésiras
  French ship Algésiras (1855)
  The Algésiras was a 90-gun steam ship of the line of the French Navy.In 1859, she took part in the blockade of Venice and various operations in the Mediterranean.She was decommissioned in 1865 and used as a transport...
  
  

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Launched: 1855

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• Arcole

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Launched: 1855

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• Impérial

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Ordered: 1856

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• Intrépide
  French ship Borda (1864)
  The Borda was a 90-gun ship of the line of the French Navy.She was built from 1853 to 1863 in Rochefort as Intrépide. By the time she was completed, technology has elvolved so much that she was already obsolete, and she had to be transformed before she was launched...
  
  

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Launched: 1864

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• Redoutable

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Launched: 1857

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