According to Guinness World Records, the smallest submarine ever made is just 4mm, or 0.157 inches long, and was created in ...

France’s Rubis-class nuclear-powered attack submarines (SSNs), despite their smaller size (2,600 tons submerged), have been ...

shows the 30-feet-long and 24-feet-wide submersible as capable of carrying six Italian-made Black Scorpion small torpedoes, aimed forward. (The resemblance to a toy submarine playset is uncanny.) ...