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Water cannons for submarines

15.07.2019

Japan has begun development work on Project 29SS submarines, which will replace the 2009 Soryu-class diesel-electric Stirling-electric submarines.

Diesel-Stirling-electric submarines of the Soryu (Japanese Blue Dragon) class are a further development of the Oyashio-class submarines, from which they differ in increased displacement and the installation of an air-independent Stirling engine. They became the largest post-war submarines in Japan and are considered to be the most high-tech and quiet among conventionally powered submarines.

Meanwhile, Mitsubishi Heavy Industries Corporation has been developing a new generation of submarines. The project should be ready by 2020, and the first submarine will enter service with the Japan Maritime Self-Defense Force around 2031. The hull will generally follow the shape of the previous generation submarines, but for better hydrodynamics, engineers will put the retractable devices guard lower and move the horizontal rudders from it.

According to the calculations of the Japanese, this should increase the secrecy of the vessel. The new submarine will receive a jet propulsion instead of a propeller, as well as lithium-ion batteries as a quieter power source. The armament of the submarines is likely to remain the same as the previous generation: six 533 mm torpedo tubes for heavy torpedoes and Harpoon cruise anti-ship missiles.

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