I can confirm nor deny during the Cold War the US Navy had nuclear depth charges. I dont think they still use or have them anymore.
If you were old enough you might have seen one of these in the late 80s early 90s as the cold war ended they where withdrawn from the inventory.
Nixon library has one on display at least the case of one. The B57 had a hydrostatic fuse option...helos, S3,P3s could all come to the party.
https://blog.nixonfoundation.org/2022/07/cold-war-close-artifact-spotlight-mk-57-bu-atomic-weapon/
https://www.reddit.com/r/WeirdWings/comments/1fh99s6/more_from_the_everybodygetsanuke_phase_of/
Lol everyone gets a nuke phase....
Fun fact...
The MK101 didn’t have a environmental safety sensor meaning it couldn’t tell if it was dropped on purpose it only had a hydrostatic fuse so if the weapon was armed and the helo crashed or ditched or the weapon rolled off the deck it would reach it’s set depth and detonate. This was also before PAL safety links and “codes” like the Brits we used simple keys plural in a two man loop set up. The Brits publicly never went to PAL links on their Trident boats so the sub commander has sole launch abilities with his XO on the second key. We use PAL codes and links that code must come from NCA so a sub commander cannot go rouge. Makes for good movies but not possible with a US trident boat.