A four-funnel liner, also known as a four-stacker, is an ocean liner with four funnels.
At the turn of the 20th century, as national shipping companies competed for passengers on the lucrative transatlantic route between Europe and America, a series of increasingly large, luxurious and fast ocean liners were built requiring four funnels to service their expansive boiler rooms. As they were introduced onto the North Atlantic many of the four-stackers would claim prestigious accolades such as the largest, longest or fastest ship in the world. An ocean liner with four funnels rapidly became symbol of power, prestige and safety to the travelling public and shipping companies leveraged this trend extensively to market their best ships, for example the White Star Line with the Olympic class of ships. The narrative that four-stackers were emblematic of safety was shattered with the loss of , sunk on her maiden voyage in 1912. While the naval architecture of four-funnel liners started to give way to more efficient ship layouts in the 1910s the distinctive profile of the four-funnel ocean liner has firmly endured in the public consciousness well into the modern age, largely due to ongoing interest in the loss of the Titanic as well as the sinking of in 1915, which significantly altered the course of World War One.
was the first four-funnel ocean liner briefly operating in this configuration in 1867. , launched in 1897, was the first ocean liner purpose built with four funnels and was the first of the golden era of ocean liners that became prominent in the 20th century. In all, 15 four-funnel liners were produced; Great Eastern in 1858, and the remainder between 1897 and 1922. Titanic sank on her maiden voyage, four more were sunk during the World Wars, and the other ten were all scrapped. The last four-funnelled liner ever built was ; however, two of her funnels were later removed making, the last four-funnel liner in service and the only one to survive service during both World Wars.
Description SS Great Eastern; a Victorian four-funnel ocean liner
The 19,000 tonne , launched on 31 January 1858, was history's only five-funnel ocean liner. Designed by the renowned British engineer Isambard Kingdom Brunel she was absolutely colossal for her era representing a more than five-fold jump in size from the prior worlds largest ship, the 3,600 tonne . Brunel aimed to take full advantage of the Square–cube law with Great Easterns unprecedented size allowing the ship to sail non-stop from Britain to Australia with 4000 passengers on board, this plan never materialized and instead she was deployed on the transatlantic route. Great Eastern became a forerunner of the giant ocean liners that would follow her half a century later. She survived several major accidents early in her career that would have doomed smaller liners contributing to the concept among the general public that an ocean liner's size was directly proportional to her level of safety.
In 1865 Great Eastern was converted into a transoceanic telegraph cable-laying ship and had the second-aft-most of her five funnels removed to make way for huge reels of telegraph cable. After successfully laying the first durable Transatlantic Telegraph Cable, the Great Eastern was then chartered to a French Company, 'La Société des Affréteurs du Great Eastern', to bring wealthy American passengers across the Atlantic to the 1867 Paris Exposition World's Fair. The company fully refitted the Great Eastern from cable laying back into her original ocean liner configuration but made these alterations around her now reduced four-funnel layout. Great Eastern was then deployed on a single round trip Atlantic crossing, which marked the first time in history that a four-funnel ocean liner operated in commercial service. Jules Verne was a notable passenger on the Great Easterns 1867 westbound crossing and would later write the novel A Floating City based on his experience during this voyage.
The first Paris Exposition voyages were severely underbooked leading to the cancellation of further planned voyages. 1867 ended up being the final time the Great Eastern ever operated as an ocean liner as she was soon once again converted back to cable laying duties. After a few more years of cable laying the Great Eastern was then laid up for over a decade and was finally scrapped in Liverpool, England in 1889, nearly a decade before any other four-funnel ocean liners would be built. For the transatlantic passenger trade Great Eastern was simply too far ahead of her time. It would be another 30 years until transatlantic migration increased to the point where building ocean liners as large as the Great Eastern, that required four funnels due to their high speed, would become commercially viable.
The German four-funnel ocean liners
On the 4th of August 1889, the same year was scrapped, the new German Kaiser Wilhelm II attended the British Naval Review at Spithead. Among the 160 ships present was White Star Lines brand new flagship ocean liner the two-stacker . The Kaiser was invited to tour the ship and deeply impressed quoted "We must have some of these". This tour signalled the beginning of an intense naval rivalry between the British Empire and the much younger nation of Germany. Germany aimed to challenge Britain’s dominance both in military vessels and in commercial ocean liners.
, launched on 4 May 1897 by the North German Lloyd Line (NDL) was the first purpose-built ocean liner to have four funnels. At 14,000 tonnes she was somewhat smaller than the Great Eastern but much more advanced due to the four decade gap between the two ships.
Kaiser Wilhelm der Grosse was built to outshine the British Cunard Line's two premier ocean liners of the era, and , which entered service in 1893 as the largest and fastest ships currently operating anywhere in the world. Kaiser Wilhelm der Grosse was marginally larger and faster than the Cunard ships and it would have been entirely possible for her boilers to have been only connected to two funnel uptakes matching the layout of the Cunarders as well as other liners of the era such as Teutonic and . NDL however purposely designed the Kaiser Wilhelm der Grosse with four funnels arranged in two distinct pairings with a wider space between the second and third funnels. This marketing driven decision; made to give the ship a more impressive and powerful appearance to the travelling public, kickstarted the trend of four-funnel liners becoming a symbol of prestige.Miller, p. 4
Kaiser Wilhelm der Grosses four large funnels were painted a bright gold colour to match the NDLs company colours. By this period virtually all ocean liners used a paint scheme on their large funnels as floating branding for their shipping lines, having four funnels further accentuated this method of advertising.
Kaiser Wilhelm der Grosse was extremely successful. NDLs main rival in German shipping, Hamburg America Line, would soon build their own four-funneled liner, , in 1900. Deutschland was designed with more powerful engines and immediately captured the Blue Riband for the fastest crossing of the Atlantic from Kaiser Wilhelm der Grosse.
NDL would follow Kaiser Wilhelm der Grosse with a sister ship ,, in 1901. NDL then built two additional half-sisters, in 1903, and the in 1907, based on the same design as Kaiser Wilhelm der Grosse and Kronprinz Wilhelm but significantly enlarged from approximately 14,000 tonnes to 19,000 tonnes. The NDL quartet of ships would be collectively known as the "Four-Flyers" due to their high speed. With these five well matched four-stackers the Germans held a dominant position in the premier North Atlantic trade.
Lusitania and Mauretania, the Cunard Greyhounds
Britain was eager to respond to Germany's new four-stackers. The Cunard Line took a loan from the British Government to build two record breakers, and , both of which had their maiden voyages in 1907. Lusitania and Mauretania were both laid out with four boiler rooms with one funnel to each room, they powered four Parsons steam turbine engines making the two ships by far the most powerful ships ever built up to that point. Mauretania was the fastest of all four-funnelled liners and held the transatlantic speed record for 20 years. At 32,000 tonnes this pair of liners represented a large leap in size from the previous generation of four-stackers, which were all in the 14,000-20,000 tonne range. Lusitania was the first four-stacker to feature equidistant spacing between her four funnels, and all subsequent remaining four-funnel liners would continue to follow this arrangement.
had spent her entire career as an ocean liner since 1900 suffering from severe stern vibration issues due to the power of her engines. With the introduction of Lusitania and Mauretania in 1907, Deutschland was becoming increasingly unpopular and uncompetitive on the North Atlantic. By 1910 she was reassigned as a full-time cruise ship and renamed SS Victoria Luise. Her engines were no longer required to reach her record breaking high speeds and they were derated solving the ship’s vibration problems. The former ocean liner became extremely successful in her new role as a cruise ship.
The Olympic Trio Another British shipping company, White Star Line, ordered a trio of massive ocean liners to rival Cunard's liners with the introduction of , and . Olympics maiden voyage was in 1911, Titanics maiden voyage was in 1912 and Britannics was intended to be in 1915 although this was interrupted by World War One. White Star Line elected not to compete with Cunard over speed due to the excessive amount of coal Cunard's pair of turbine-driven ships required. White Star instead focused on luxury and economies of scale with sheer size. Starting at 45,000 tonnes this trio represented a 30% jump in size over the Cunard ships. Britannic, at 48,000 tonnes, was the largest four-funneled ocean liner ever built. With a lower top speed the Olympic-class liners only required three sets of funnels to manage the boiler exhausts, but due to the prestige garnered by four-funnel ships, White Star decided to fit the three Olympic-class ships with a dummy fourth funnel to rival the two Cunard ships and give an impression of power. The dummy funnel helped balance the exterior appearance of the ship and was used to ventilate the ships' kitchens and engineering spaces.
The sinking of the Titanic
sank in 1912 after hitting an iceberg on her maiden voyage. The ship was sailing for New York and was approximately 400 miles off the coast of Newfoundland, Canada when collision occurred. At the time, Titanic was the largest and most luxurious ship in the world, and emblematic of four-funnel ocean liners being the world's most advanced and prestigious ships. Her loss shattered public confidence in oceanic travel and immediately ended the marketing advantage of having an ocean liner with four funnels.
Following the sinking, was forced to return to her builders Harland and Wolff for extensive safety improvements, while , still under construction, was heavily modified following the Titanic disaster. Other four-funnel liners including and required refits as well to carry enough lifeboats for all on board. World War I would begin in late 1914, and four-funneled liners would never again reach the levels of prestige they held before Titanic’s loss.
The French Four-Stacker In 1912 the Compagnie Générale Transatlantique (CGT/French Line) debuted the new on the North Atlantic a mere five days after the loss of Titanic. France was the only four-funneled liner not built in Britain or Germany. At 24,000 tonnes she was smaller than her British rivals but became an extremely popular ship excelling in her interior luxury and the quality of her fine dining.
Cunard’s three-ship weekly service