Four-funnel liner

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A four-funnel liner, also known as a four-stacker, is an ocean liner with four funnels.

Kaiser Wilhelm der Grosse, launched in 1897, was the first ocean liner to have four funnels and was one of the first of the golden era of ocean liners that became prominent in the 20th century.^[1]

Among the most well known four-funnels are Titanic, sunk on her maiden voyage on 15 April 1912, and Lusitania, torpedoed on 7 May 1915, during the First World War. In all, 15 four-funnel liners were produced; Great Eastern in 1858, and the remainder between 1897 and 1922. Four were sunk during the World Wars, and all others besides Titanic were scrapped.^[2]

Mauretania was the fastest of all four-funnelled liners. The last four-funnelled liner ever built was Windsor Castle; however, two of her funnels were later removed making the Aquitania the last four-funnel liner in service and the only one to survive service during both World Wars.