The sizeable frame of the sub means it's capable of carrying a crew of up to 160 on board Members of the crew can be seen on top of the beast. The Dmitry Donskoy is pictured here at a docking station with its enormous propellers spitting water backwards. It appears the presence of the sub in the Baltic Sea is purely for show due to the shallowness of the water. The Dmitriy Donskoy is the only one still in active service with the Russian Navy, but its operational duties have now been scaled back to serve as a test platform for the Bulava missile. Typically, the Russian model - of which six were build - was bigger and heavier than its US counterpart. The reason for building the enormous fighting machine was to counter the American equivalent Ohio-class submarines, which were capable of carrying 192 warheads. It was deployed by the Soviet Army in the 1980s after being developed under Project 941 as the Russian Akula class, which translates to shark. This will mean it will be forced to surface to avoid scraping along the sea bed, giving enthusiasts the chance to catch a glimpse of the beast. Typhoons were built to hide in the world's deepest oceans and stay there undetected for months, whereas the stretch of water separating Scandinavia and northern mainland Europe has an average depth of just 180 feet. The Dmitriy Donskoy (pictured) is the only one still in active service with the Russian Navy, but its operational duties have now been scaled back to serve as a test platform for the Bulava missile. It is big enough to hold a crew of 160 on board. This design greatly increases their chances of survival - even if one pressure hull is breached, the crew members in the other are safe and there is less potential for flooding. In the main body of the sub, two long pressure hulls lie parallel with a third, smaller pressure hull above them which protrudes just below the sail, and two other pressure hulls for torpedoes and steering gear. Typhoon-class submarines feature multiple pressure hulls that simplify internal design while making the vessel much wider than a normal submarine. This design greatly increases their chances of survival - even if one pressure hull is breached, the crew members in the other are safe and there is less potential for floodingĮerily, the Dmitry Donskoy - named after the Prince of Moscow who reigned from 1359 to 1389 - can stay submerged for periods of up to 120 days and is fitted with six torpedo tubes. Typhoon-class submarines like the Dmitry Donskoy (pictured) feature multiple pressure hulls that simplify internal design while making the vessel much wider than a normal submarine.
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