File:US Navy 100409-N-3090M-330 Sailors lower the Submarine Squadron (SUBRON) 4 pennant during a change of command ceremony aboard the historic ship Nautilus.jpg - Wikimedia Commons

Submarine Photo Index

Submarine Photo Index

Uss memphis hi-res stock photography and images - Alamy

Naval History & Heritage Command - Lets Talk Subs! Here are a few

Submarine squadron 4 hi-res stock photography and images - Alamy

AS & SUBRON Submarine Tenders & Submarine Squadrons Groups

Commander, Submarine Squadron 15

Sailfish (SS-192) of the US Navy - American Submarine of the Sargo

Commander, Submarine Squadron 15

USS Quillback - Wikipedia

Operation Sunshine 4-3-2-1… For the USA and the U.S. Navy – The