62 years ago today, on October 15, 1961, Soviet Juliett-class submarine K-24 was laid down at the Krasnoye Sormovo shipyard in Nizhny Novgorad, Russia.
MuseumShip U461 in Peenemunde, Germany
MuseumShip Blog
64 years ago today, on 15 October 1959, Barbel-class submarine USS Blueback SS-581 was commissioned with LCDR Robert H. Gautier in command.
She was the last non-nuclear submarine to join the United States Navy and was the final conventionally powered combat capable submarine to be decommissioned, leaving the United States Navy with a fully nuclear submarine fleet except for the research submarine USS Dolphin.
MuseumShip at the Oregon Museum of Science and Industry (OMSI), Portland, OR
On 15 October 1863, confederate submarine 'H.L. Hunley', while performing a demonstration dive beneath CSS Indian Chief in Charleston Harbour, SC, was lost with all hands. It wasn't until November 7 until she was found.
Museum ship at Friends of the Hunley, Charleston, SC