By A Mystery Man Writer
Why are countries like North Korea making military submarines now
How good are 'narco submarines' or submarines built by smuggling
Is it legal for a civilian to own a full size submarine? - Quora
What would happen if a submarine went under water before all the
What happens when a submarine sees a foreign vessel during
Could the U.S. sneak a submarine into the Black Sea and torpedo
What submarines were used during WWII, and how do they compare to
How does a submarine remain horizontal when it is underwater? - Quora
What happens if a submarine can't surface due to enemy ships or
Are submarines ever equipped with lifeboats? - Quora
Can submarines touch the sea floor? - Quora
How does the Coast Guard neutralize submarines carrying drugs? - Quora
Is the Swedish submarine Gotland too quiet for the US Navy? - Quora