It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
8 JUL, 16:12
The Sevmash Shipyard delivered the Project 09852 special-purpose submarine Belgorod that will carry Poseidon nuclear-powered underwater drones to the Russian Navy, the Shipyard’s press office announced on Friday.
"On July 8, 2022, a special ceremony was held at the Sevmash Production Association (part of the United Shipbuilding Corporation), Russia’s largest shipbuilding enterprise, to sign a certificate of the acceptance/delivery of the Belgorod research submarine to the Navy," the press office said in a statement.
The submarine is designed to address diverse research tasks, implement research and rescue operations and can carry deep-water rescue and autonomous unmanned submersible vehicles on its board.
As Russian Navy Commander-in-Chief Nikolay Yevmenov said at the submarine’s delivery ceremony, the Belgorod will open new opportunities in carrying out research.
"The submarine Belgorod opens new opportunities for Russia in holding various researches and helps carry out diverse scientific expeditions and rescue operations in remote areas of the World Ocean," he said.
Belgorod submarine
The Project 09852 special-purpose submarine Belgorod, the first carrier of Poseidon nuclear-powered underwater drones, was floated out on April 23, 2019. The submarine was initially planned to be delivered to the Navy in 2020. According to available data, its delivery was delayed as the program of its trials was not completed, which was also due to the coronavirus pandemic.
Under Russia’s state armament program through 2027, shipbuilders will deliver three special-purpose nuclear-powered submarines to the Russian Navy.
Background
Fig. 1: The Russian submarine K-19, as taken from a US Navy Plane. (Source: Wikimedia Commons)
The Soviet Union began building their first ballistic-missile-equipped nuclear submarine in 1958, and named it the K-19. [1] The submarine, pictured in Fig. 1, was completed on November 12, 1960, and could operate at a max depth of 150m. [1] There were three ballistic nuclear missiles on the submarine, each with ranges of 650 km. [1] The building of the K-19 was rushed, as the Soviet leaders were determined to build a nuclear sub fleet that would rival the United States. [1] Production and testing was so rushed, however, that the Captain of the K-19, Nikolai Zateyev, thought that the submarine fleet was not fit for combat. [1] From July-November of 1960, the K-19's sea trials were plagued by breakdowns and malfunctions. [1] However, on June 18, 1961, the K-19 departed on its first mission, as a U.S. attacker in the Atlantic Ocean. [1]
Incident
On July 4, 1961, the K-19 developed a radioactive leak while in the North Atlantic Ocean. [2] It is believed that the probable reason for the leak was an incident during the start-up tests of one of the reactors, where the first pressure test went all the way to 400 atm because of a pressure gauge malfunction. [2] The designed pressure was only 200 atm, so this resulted in damage to the piping of the primary system. [2] The person in charge of the test, however, did not report the incident to his superiors, so the repair work was not performed. [2] The leak was located in a pipe regulating the pressure within the primary cooling circuit, causing a sudden drop in pressure, which set off the reactor emergency systems. [3] This drop in pressure led to the reactor water boiling, and the temperature of the reactor room reached at least 140°C, before a fire was ignited in the room. [2] The fire was extinguished, but the major issue was the cooling of the reactor core. [2] The Captain, however, did not react immediately, although it should have been clear that a leak had developed in the primary system in one of the two submarine reactors. [2] There was no coolant system in place to stop the reactor from overheating, so the crew, protected only by raincoats and gasmasks, had to enter the reactor compartment and fix the leak, in an effort to save the submarine from exploding. [4] They developed a cooling system with the drinking water supply on board, which proved to be effective. [2] Although the crew avoided the melting of the fuel and a possible steam explosion, they exposed themselves to doses of radiation of 50 to 60 Sv in the form of noxious gas and steam. [2,3] The crew was evacuated to a diesel submarine based nearby the incident, and the K-19 was towed home to base on the Kola Peninsula. [3]
Aftermath
Within a matter of days, eight crew members who had fixed the leak died of radiation poisoning. [4] Several of the other compartments on the submarine itself, and the rest of the crew also became contaminated. [2] The submarine was later repaired and brought back into service, by replacing the reactor compartment of the submarine with a new nuclear power unit. [2] The two damaged reactors and their fuel were dumped in the Abrosimova Bay in the Kara Sea in 1965. [2] There was then another reactor incident on the K-19 in 1972, leading it to receive the nickname of Hiroshima because of the numerous incidents. [3] In total, twenty-two of the 139 men in the submarine's original crew in 1961 died of radiation sickness over the few years following the incident. [4] The fate of the K-19 was a closely guarded secret, and was not publicized to Western sources until 1991 when the newspaper Pravda confirmed the radiation had killed many members of the crew. [4] The crew members had been sworn to secrecy, and had to lie to doctors in routine checkups even decades after the incident. [4]
originally posted by: Blue_Jay33
Reminds me of
The K-class submarines were a class of steam-propelled submarines of the Royal Navy designed in 1913. Intended as large, fast vessels with the endurance and speed to operate with the battle fleet, they gained notoriety and the nickname of "Kalamity class" for being involved in many accidents. Of the 18 built, none were lost through enemy action, but six sank, with significant loss of life, in accidents. Only one ever engaged an enemy vessel, K-7 hitting a U-boat amidships, though the torpedo failed to explode with what has been described as typical "K" luck; K-7 escaped retaliation by steaming away at speed.
The boats suffered numerous accidents, largely caused by their poor manoeuvrability when operating with the surface fleet, including:
-K13 sank on 19 January 1917 during sea trials when an intake failed to close whilst diving and her engine room flooded. She was eventually salvaged and recommissioned as K22 in March 1917.
-K1 collided with K4 off the Danish coast on 18 November 1917 and was scuttled to avoid capture.
-Two boats were lost in an incident known as the Battle of May Island on 31 January 1918. The cruiser HMS Fearless collided with the head of a line of submarines, K17, which sank in about 8 minutes, whilst other submarines behind her all turned to avoid her. K4 was struck by K6 which almost cut her in half and was then struck by K7 before she finally sank with all her crew. At the same time K22 (the recommissioned K13) and K14 collided although both survived. In just 75 minutes, two submarines had been sunk, three badly damaged and 105 crew killed.
-K5 was lost due to unknown reasons during a mock battle in the Bay of Biscay on 20 January 1921. Nothing further was heard of her following a signal that she was diving, but wreckage was recovered later that day. It was concluded that she exceeded her safe maximum depth.
-K15 sank at her mooring in Portsmouth on 25 June 1921. This was caused by hydraulic oil expanding in the hot weather and contracting overnight as the temperature dropped and the consequent loss of pressure causing diving vents to open. The boat flooded through open hatches as it submerged. Prior to this in May of that year the boat had survived taking water into her funnel uptakes which had doused the furnaces and caused her to sink stern first to the bottom. In that case quick action on part of her captain and crew had prevented loss of life.
Morale was a frequent problem. Submariners were 'Volunteers Only,' and the class reputation as being designated 'K' for Kalamity (or Killer) did little to endear them to their crews, or provide a steady stream of volunteers. Sailors serving aboard the boats blackly dubbed themselves the "Suicide Club."
originally posted by: baggy7981
a reply to: putnam6
I take your K-19 and raise you the entire British Killer-class!
en.wikipedia.org...
The K-class submarines were a class of steam-propelled submarines of the Royal Navy designed in 1913. Intended as large, fast vessels with the endurance and speed to operate with the battle fleet, they gained notoriety and the nickname of "Kalamity class" for being involved in many accidents. Of the 18 built, none were lost through enemy action, but six sank, with significant loss of life, in accidents. Only one ever engaged an enemy vessel, K-7 hitting a U-boat amidships, though the torpedo failed to explode with what has been described as typical "K" luck; K-7 escaped retaliation by steaming away at speed.
The boats suffered numerous accidents, largely caused by their poor manoeuvrability when operating with the surface fleet, including:
-K13 sank on 19 January 1917 during sea trials when an intake failed to close whilst diving and her engine room flooded. She was eventually salvaged and recommissioned as K22 in March 1917.
-K1 collided with K4 off the Danish coast on 18 November 1917 and was scuttled to avoid capture.
-Two boats were lost in an incident known as the Battle of May Island on 31 January 1918. The cruiser HMS Fearless collided with the head of a line of submarines, K17, which sank in about 8 minutes, whilst other submarines behind her all turned to avoid her. K4 was struck by K6 which almost cut her in half and was then struck by K7 before she finally sank with all her crew. At the same time K22 (the recommissioned K13) and K14 collided although both survived. In just 75 minutes, two submarines had been sunk, three badly damaged and 105 crew killed.
-K5 was lost due to unknown reasons during a mock battle in the Bay of Biscay on 20 January 1921. Nothing further was heard of her following a signal that she was diving, but wreckage was recovered later that day. It was concluded that she exceeded her safe maximum depth.
-K15 sank at her mooring in Portsmouth on 25 June 1921. This was caused by hydraulic oil expanding in the hot weather and contracting overnight as the temperature dropped and the consequent loss of pressure causing diving vents to open. The boat flooded through open hatches as it submerged. Prior to this in May of that year the boat had survived taking water into her funnel uptakes which had doused the furnaces and caused her to sink stern first to the bottom. In that case quick action on part of her captain and crew had prevented loss of life.
Morale was a frequent problem. Submariners were 'Volunteers Only,' and the class reputation as being designated 'K' for Kalamity (or Killer) did little to endear them to their crews, or provide a steady stream of volunteers. Sailors serving aboard the boats blackly dubbed themselves the "Suicide Club."
Any relationship between China and Russia, including the current modus vivendi of coordination of certain positions, can only be of temporary and asymmetric character. The current approximation is defined by a struggle for survival & creating counterweight to US global dominance.
originally posted by: Silcone Synapse
That beast looks bigger than your average sub!
I don't know much about modern sonar or other detection methods,but wouldn't something so huge be easier to detect?
And what about the propellors-being the first of its kind,shouldn't that mean the propellers give off a unique signature of some kind making detection easy if you know what to look for?
As a piece of engineering its pretty impressive just by its size I must admit..
Shame about its dark purpose and cargo though.