USS Nautilus (SS-168) - Wikipedia

Today in 1944, USS - Naval History & Heritage Command

USS Piper (SS-409) during WW2 (top) and in 1968 (bottom) after multiple refits to add a snorkel and a new bow sonar as well as streamline the boat. : r/submarines

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USS Nautilus (SS-168) - Wikipedia

USS Nautilus（SS-168） - The Sub-drivers Forum

Did the USS Nautilus survive WW2? - Quora

USS Nautilus (SSN-571) - Wikipedia

What was the idea behind the French submarine cruiser MN Surcouf, were a pair of 8 inch guns in any way practical or useful on a submarine? - Quora

Would have been possible in the interwar period to develop a cruiser submarine i.e. an heavy armored and heavy armed ship with a really low profile but able to stay underwater for

What least known event had the most impact in the 2nd World War? - Quora

USS Nautilus (SSN-571) - Wikipedia

1:1 U.S.S. Nautilus SSN-571 - Full Interior - Submarine Minecraft Map

What was the idea behind the French submarine cruiser MN Surcouf, were a pair of 8 inch guns in any way practical or useful on a submarine? - Quora

In the battle of Midway, did the Americans get lucky and win a battle they probably should have lost? - Quora