Chinese submarine designers are capable of surprises.

Now satellite imagery is shedding new light on a new sub with a very interesting design. Total submarine fleet strength by naval power. China is the only country on earth that can build a full-size submarine without any details leaking out. Currently top 10 attack submarines in the world are these: Nr.1 Seawolf class (USA) The boats of the Seawolf class are the most advanced but also the most expensive hunter-killer submarines in the world. Beyond their most obvious uses, submarines can be used in support of special forces operations and reconnaissance work. China's Advanced Submarines Are 'Breaking Records' The People’s Liberation Army Navy (PLAN) has a sizable force of AIP boats that can be armed with advanced anti-ship cruise missiles. That's a whole other topic. China’s nuclear submarine fleet, Western strategists say, has added to the challenge that the increasingly powerful Chinese military poses to U.S. dominance in Asia. Assessing the size, strength and location of China's submarine fleet. China's newest nuclear attack submarine, Type 093B, is quiet and deadly, with an arsenal of torpedoes and cruise missiles.

The modern attack submarine is capable of sea- and land-attack through conventional and nuclear means.

Captain Parks also included Russia's submarines in his comments.