Thread by @Saturnax1

#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...

@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...

@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.

@CovertShores @Capt_Navy @RSS_40 @TayfunOzberk @FORONAVAL @IBallantyn @The_Lookout_N @CislakJaroslaw @USN_Submariner @R_P_one 4. Design was approved in the early 1972 & handed over to the SEVMASH Shipbuilding. Frequent design changes postponed the project until 1977, when SEVMASH was already busy with building giant Project 941 Akula/Typhoon class SSBNs. Project 717 was cancelled in the late 1977.

@CovertShores @Capt_Navy @RSS_40 @TayfunOzberk @FORONAVAL @IBallantyn @The_Lookout_N @CislakJaroslaw @USN_Submariner @R_P_one 5. One of the additional requirements that postponed the project was the ability of Project 717 submarine to rescue sailors from a sunken submarine with DSRVs and a rescue chamber.

@CovertShores @Capt_Navy @RSS_40 @TayfunOzberk @FORONAVAL @IBallantyn @The_Lookout_N @CislakJaroslaw @USN_Submariner @R_P_one 6. In 1974, design bureau "TSKB-16 Volna" responsible for the Project 717 design & specifications was incorporated into the famous design bureau "Malakhit" in St. Petersburg.
Photos by @fotoflota & Malakhit.
Adding a CGI showing the equipment unloading.

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