H I Sutton's latest update is on the Dry Combat Submersible (DCS). The DCS is a type of SEAL Delivery Vehicle (SDV) which has a dry interior to allow the SEALs to arrive at their target fresher than the usual wet-sub where they have to wear their diving gear at all times.
H.I. Sutton's latest article on his Covert Shores website is a survey of submarines with nuclear attack capability in the world today. It's not just the United States and Russia anymore.
Covert Shores, a website dedicated to covert submarine operations throughout history to today, has a new article on possible news 'leak' on the Russian 'Status-6' nuclear torpedo. The leak occurred at meeting between defense chiefs and President Putin in Sochi on 9th November 2015.
A website that specializes in information on special inshore naval operations and equipment is also in the process of becoming a book. Webmaster and author H. I. Sutton has compiled an extensive listing of craft from a clandestine world.