The 'Rock Star' of the Submarine World Just Turned 50
Alvin is a little three-man submarine commissioned for ocean exploration and launched in June of 1964. It is the only submarine shared by NOAA and the Navy -and it’s still going strong fifty years later...
https://www.neatorama.com/2014/06/07/The-Rock-Star-of-the-Submarine-World-Just-Turned-50/