Firstly I must apologise to steampunk fans for destroying their image of a steam powered submarine as history shows that using a steam engine to power a submarine is not a particularly good idea and indeed the Royal Navy’s attempt to introduce them is tragically laughable. In 1915 the K class steam power submarines were ordered for the Royal Navy as they were in need of a fast submarine that could serve as reconnaissance vessel for the fleet which the current diesel engines could not keep up with.
Submarines before nuclear power usually operated by using a diesel engine while they were above the surface as those engines needed air and an exhaust to work. While they were above the water the engine as well as powering the usual equipment would also recharge electric batteries which were used when the submarine submerged. The K class submarine, although it did have a diesel engine it was equipped with two steam turbines and four electric motors. Of course for steam engines the submarine needed funnels which were designed to retract when the submarine prepared to dive and the furnaces which heated the boilers would dampened and cooled. The submarines were 338 feet long, weighing 2,500 tons, about the same size as a destroyer and on the surface they could achieve a speed of 24 notes, a speed not equalled by a submarine until the 1960’s. Below the surface however they were much slower as the battery powered electric motors could not propel such a large submarine at any great speed.
So what was the problem? Well frankly a steam engine on a submarine was just a bad idea. When an enemy vessel was spotted it would take 4 mins, at best, to retract the funnels which would leave plenty of time for the enemy vessel to spot the submarine and swing into action. Submarines throughout history also have the inherent problem of heat due to the close proximity of the crew to each other and the engines which means that they can get very hot and stuffy. It must have been a hellish existence for the stokers on-board who in the confined space of the boiler room had to keep the huge furnaces burning. Although they were dampened to try and reduce some of the heat before submerging the boilers room became uninhabitable due to the heat and smoke which must made of made the entire submarine an insufferable hot and claustrophobic environment.
The submarines were also difficult to control when submerging as K-3 discovered in May 1916 when during a test dive she buried her bow into the bottom as she did not respond to the helm or the diving planes. Other problems included gas leaks, explosions, boiler fires, hydraulic failures … essential everything that could have gone wrong, did. K-2 caught fire, K-4 ran aground, K-15 sank during trials, k-7 was depth charged by a Royal Navy destroyer while K-1 collided with K-4 on a training exercise. K-14’S steering gear jammed on a Flotilla manure which lead K-22 to collide into her as she crossed her path. The situation was made worse when a battle cruiser who could not steer out of the way in time crashed into the bow of K-22. Amazing after all of these disasters the Admiralty stuck the K class program after WW1! Unsurprisingly the disasters continued… in 1921 K-21 sank when moored up after a valve failed, while K-22 submerged with its funnels open which lead to the inevitable. The last k class submarine to be built, K-26, scalded two stokers to death when a faulty steam valve popped during a trial. In total 17 K class submarines were launched, but by the late 1920’s most had been scrapped or destroyed, K-26 was the last to be scrapped in 1931.
It is clear that the K class steam powered submarine was an entire failure. They were badly designed and with the added trouble of the steam engines made these machines dangerous and a horror to crew which surely deserve the nickname they were given, the ‘kalamity class’. Although it is slightly comical to see how badly these submarines performed we must remember that they were manned by volunteers of the Royal Navy. As well as the horrendous conditions on board made much worse by the furnaces the crews took a dark view of their situation, expecting their to be an accident at some point. This feeling of foreboding and fear led the crews of these submarines to name themselves, the ‘Suicide Club’. It is surely justified that these men receive their due respect and admiration for manning these death traps with such dedication and bravery as we reach the many centenaries of the First World War.
Information and pictures taken from, War is Boring, ‘His Majesty’s Scary Steam Subs’, <https://warisboring.com/his-majesty-s-scary-steam-subs-85ea39627498#.oskn4pn1r>
Information and pictures taken from, Diesel Punks, ‘Steam Subs’, <http://www.dieselpunks.org/profiles/blogs/steam-subs>