If you are looking for info about Subs, the Navy, the Military, a cure for the common cold or any deep esoteric questions that have challenged great thinkers over the ages I suggest you start at Looking up Submarine Stuff.

Sorry... You will only find Submarine info - skip all that about cures for the common cold etc.

Want more? It's the internet.     Look it up.
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My oft repeated disclaimer about copying of items from the internet