Russian Navy Nuclear-Powered combat AUVs? 
If the robotics revolution pushes us towards uncrewed nuclear subs, will Russia have an advantage?...
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US-Navy-601B-Nuclear-power-pod-for-Submarines
Nuclear power pod concept for submarines (US Navy, 1961)
In the early 1960s General Electric (GE) proposed a podded nuclear power system for submarines and surface ships. These outboard motors were termed it a nuclear power package... 
The REAL Red October - Typhoon SSBN
Updated, originally posted 14th Sept 2014 Not content to rain death and destruction from the skies with his bombers, mankind invented I.C.B.Ms which could be hidden beneath the waves in giant submarines. For a time these sea monsters roamed the world's oceans ensuring an uneasy peace. But mankind was made up of two opposing factions who sought advantage over each other. One was called the Soviet Union and was led by a man named Leonid Brezhnev who learned through his spies that his submarines were not as good as his enemy's. Paranoid and distraught, he sought a way to regain a mad equilibrium. And so he built even bigger sea monsters which could live under the polar ice caps where they were safe from his enemies' hunter-killers. He called these new submarines the TYPHOON 
Seismic_Survey_Sub
Updated with Cutaway. Originally posted May 21 2017
Russian Seismic Survey Submarine for Arctic Operations This is a unique submarine concept developed by the Rubin design bureau. It is designed to conduct sub-bottom surveys using very low frequency active sonar which can penetrate the sea floor...
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Akademik-Aleksandrov
Pr.20183 Akademik Aleksandrov connected to Poseidon/Skif project Sometimes valuable military intelligence is hiding in plain sight. A Russian media report shared to YouTube in June 2019 (now removed) appears to have shown 2М39 Poseidon aboard Akademik Aleksandrov... Read More >....
Interview-in-The-Diplomat
Interview in The Diplomat
H.I. Sutton on the Future of Underwater Warfare in the Indo-Pacific Region. What are some of the future strategic and technological challenges to submarine forces in the region?...
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US-Navy-SEAL-Delivery-Vehicle-SDV-Mk-8-Mod-0
SEAL Delivery Vehicle (SDV) Mk.8 Mod 0 The 'Gator Class' SEAL Delivery Vehicle has been the backbone of USSOCOM's SDV capabilities since the end of the Cold War...
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China-reports-discovering-UUVs
Unmanned Underwater Vehicles (UUVs) found off Chinese Coast
An incident in September, which has only now come to light, illustrates the mutual danger of submarines and fishing vessels...
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Underwater-Defence-Security-UDS-2020
UNDERWATER DEFENCE & SECURITY (UDS) 2020
3 - 5 MARCH 2020, SOUTHAMPTON, UK... Read More >....
Shelf-ATGU-connected-to-ice-breaking submarine
New OSINT on Russian 'Shelf' autonomous underwater reactor (ATGU) The reactor section of the "Submarine for servicing underwater mining complexes on the Arctic shelf and other underwater operations" is identical to the Shelf self-contained nuclear power designed for seabed operations... Read More >....