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

Category:USS Nautilus (SSN-571) - Wikimedia Commons

USS Seadragon (SSN 584) Sailed Arctic Waters Following Log Book of

USS Quillback - Wikipedia

USS Nautilus (1954) - naval encyclopedia

Subron 4 hi-res stock photography and images - Alamy

U.S. Navy Ships - Submarines

Submarine Photo Index

AS & SUBRON Submarine Tenders & Submarine Squadrons Groups

Submarine Photo Index

AS & SUBRON Submarine Tenders & Submarine Squadrons Groups

Submarine Squadron 11, COMSUBRON ELEVEN

Submarine Squadron 15, COMSUBRON 15, CSS-15

Here's and article I wrote for the WarZone covering my recent visit of the German Navy's 1st Submarine Squadron at Eckernfoerde. Hope you enjoy. : r/ submarines

Submarine Squadron 15 Sailors Volunteer with Sister Village in

Capt. Robert A. Roncska, commander of Submarine Squadron 7