Yugoslavian X-Craft: R-3E 
Yugoslavia gained a reputation for special forces crat, chief among which was the R-3E X-craft. Developed in the Cold War it was in many respects ahead of its time as a dry-SDV....
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Time_Lapse
Time lapse video of Submarine Cutaway in MS Paint
View it on Youtube:
Undersea_Cables
Updated: DG-450 and DG-350 added. Originally posted 10th June 2017.
Russian capabilities against undersea cables
A recently published article by British Member of Parliament Rishi Sunak shows the growing awareness of a new fundamental weakness of NATO countries (and many other countries around the world). The concern is that an adversary could gain a strategic advantage by interrupting internet and telecommunications between countries at a critical moment by attacking the numerous Submarine Communications Cables (SCC) which litter the sea floor between countries. The ground truth of this new naval arena clearly favors Russia both in terms of naval investment and the circumstances of geography.
This article summarizes my own thoughts and analysis on the topic.
Corrections and comments welcome.
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ARA_San_Juan
Appeal
The sense of loss when a submarine is lost during peace time transcends national boundaries and politics. Submariners have a sense of community so it is no surprise that, absent any suitable charity appeals already being established by others, a former submariner has taken it upon himself to organize one. Details yet to be published.
Watch Twitter or Reddit for details on how to donate.
I have agreed to donate signed copies of WORLD SUBMARINES: Covert Shores Recognition Guide for larger donations – see above links for details of this and other offers.... Read More >....
Piranha Special Forces submarine
Updated. The p.865 'Piranha' midget submarine was a dedicated Spetsnaz special operations craft capable of delivering 6 frogmen to a target over 400 miles from its base. Read More >....
SSNs
World SSNs
This graphic is compiled from some of the graphics in the WORLD SUBMARINES book. I included all SSN classes currently in service, plus the French Suffren Class (Barracuda) and Brazilian Álvaro Alberto Classes which are not yet in service. India also operates a single AKULA SSN on lease from Russia.
CSIC_MS200
China reveals new midget submarine design: MS200
China recently revealed the MS200 midget submarine design at the Defense & Security 2017 defense exhibition in Bangkok, Thailand. ...
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UDS18_1
Underwater Defense & Security 2018
Threat of OSINT to Fleet survivability
I will be joining a distinguished speaker line up to talk about the Russian Pr.09852 Belgorod submarine program and then, about the threat of open source intelligence (OSINT) to Fleet survivability. Specifically, how to track submarines using OSINT, and thoughts on how to reduce your own fleet’s exposure to these risks.
20th - 22nd March 2018,
Portsmouth, UK
UDS-18 Website
Target_Quiz
There are only two types of vessel; submarines, and targets.
USS_X1
USS X1 X-Craft 
The X-1 is a very interesting yet often overlooked deviation in the US Navy’s submarine history... Read More >....
