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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Jan 3

#Submarines #ColdWar
1. In the late 60s, Soviet submarine design bureau "TSKB-16 Volna" began designing a large nuclear-powered amphibious transport submarine, Project 717. The idea was for the submarine to travel hidden under the Arctic ice & unload troops & equipment...

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@CovertShores @Capt_Navy @RSS_40 @TayfunOzberk @FORONAVAL @IBallantyn @The_Lookout_N @CislakJaroslaw @USN_Submariner @R_P_one 2. on the North American coast. The preliminary design was completed in 1971 - powered by two nuclear reactors & enough internal space to accommodate nearly 500 marines and ~20 armoured personnel carriers. Proposed length of the submarine was 190 m, displacement 18.000 t...

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@CovertShores @Capt_Navy @RSS_40 @TayfunOzberk @FORONAVAL @IBallantyn @The_Lookout_N @CislakJaroslaw @USN_Submariner @R_P_one 3. maximum diving depth ~300 m and maximum speed 18 knots. Submarine was planned to have six 533 mm torpedo tubes and two retractable A-21 cannons installed at the base of the sail. Designers also included a mine-laying capacity with onboard store of 250 mines.

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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Nov 19, 2022

#SubmarinesSaturday #Submarines #Accidents
Another #nuclear bedtime story, short 🧵:
1. Russian ROSATOM agency recently announced a plan to recover two sunken nuclear submarines: K-159 (Project 627A/November class SSN) & K-27 (Project 645/November class SSN).

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@CovertShores @SubBrief @USN_Submariner @TayfunOzberk @FORONAVAL @Capt_Navy @RSS_40 @HMUboff @The_Lookout_N @R_P_one 2. K-159 was one of 12 Project 627A class SSNs - a slightly modified Project 627 Kit, that produced the first Soviet nuclear submarine Leninskiy Komsomol K-3.
Assigned to the Northern Fleet, K-159 was laid down at SEVMASH shipyard in 1962 & commissioned a year later.

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@CovertShores @SubBrief @USN_Submariner @TayfunOzberk @FORONAVAL @Capt_Navy @RSS_40 @HMUboff @The_Lookout_N @R_P_one 3. K-159 was finally decommissioned in 1989 & laid up in Gremikha naval base with both of her VM-A reactors not defuelled for the next 14 years, awaiting disposal, with little to no maintenance whatsoever. The hull of the submarine deteriorated extremely over the years...

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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Nov 17, 2022

#Submarines #SubmarinesThursday #technology
🧵A short #nuclear nightmare bedtime story!
I really shouldn't be reading this stuff before going to bed.

Following is an excerpt from "Russian Nuclear Power Plants for Marine Applications" by Ole Reistad & Povl L. Ølgaard from 2006👇

@CovertShores

@CovertShores @Capt_Navy @RSS_40 @FORONAVAL @TayfunOzberk @SubBrief @USN_Submariner @TheSubHunter1 @EmbersOfSuns @R_P_one 1. "The first Alfa-class submarine K-64 became operational in 1970, but suffered a loss-of-coolant accident in 1972 when a leak developed between the secondary water-steam circuit and the primary liquid metal circuit, exposing the primary circuit to a pressure of 70 atm.

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@CovertShores @Capt_Navy @RSS_40 @FORONAVAL @TayfunOzberk @SubBrief @USN_Submariner @TheSubHunter1 @EmbersOfSuns @R_P_one 2. As the pressure relief system failed to function, the high pressure caused a rupture of the piping of the primary circuit. Two tons of liquid metal coolant flowed out into the reactor compartment, where it solidified.

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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Nov 1, 2022

#SubmarinesTuesday #Submarines #NavalWarfare
1. Fictional scenario by Lars Wedin, author on strategic studies & retired surface warfare officer of the #RoyalSwedishNavy published in Tidskrift i Sjöväsendet in 2021:

🧵
Year 2030. The submarine HMS Blekinge lies forward & scouts.

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@CovertShores @FORONAVAL @TayfunOzberk @The_Lookout_N @HMUboff @GrumpyLars @vcdgf555 @Aviation_Intel @USN_Submariner @SubBrief 2. She lies quietly on the bottom but has a reconnaissance drone that examines the Russian sensors that are on the now unused gas pipelines Nord Stream 1 and 2. They regularly lose information.

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@CovertShores @FORONAVAL @TayfunOzberk @The_Lookout_N @HMUboff @GrumpyLars @vcdgf555 @Aviation_Intel @USN_Submariner @SubBrief 3. The reconnaissance drone can also map the coast or archipelago before the landing of divers and scout out mines and sensor chains. Blekinge also has a security drone (UUV) as close protection.

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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Sep 10, 2021

#SubFriday #Submarines #USNavy
1. In 1976, a special purpose nuclear-powered submersible NR-1 was tasked to recover AIM-54A Phoenix missile from an F‐14 fighter plane that fell from the deck of the carrier USS John F. Kennedy (CV-67) during a NATO exercise Sept. 14. 1976.

2. Photo shows the missing F-14 upside-down on the bottom with rope pendant around the landing gear.

3. This photo shows the dropped F-14 right side up with the cockpit open for inspection

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Saturnax 🇸🇰🇪🇺🇺🇦

@Saturnax1

Jan 20, 2021

#SubWednesday #Submarines #RoyalNavy #SilentService #SovietNavy #ВМФ #ColdWar
1. In the early 1977, Royal Navy's Swiftsure class leader HMS Swiftsure (S-126) shadowed Soviet Navy's Project 1143 Krechyet class aircraft carrier Kiev during the Northern Fleet's exercise Sever-77.

2. Swiftsure's Captain John Speller ordered the submarine to approach the carrier from behind, moving only a few knots faster than the carrier. As the Swiftsure approched close enough the crew
could only see massive waves created by Kiev's propellers.

3. Swiftsure slipped under the hull of the carrier and maintaing her speed she started to record the noise footprint of Kiev so that
she could be identified by the SOSUS network & other Western submarines.

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