Avalon is one of only 2 Mystic Class Deep Submergence Rescue Vehicle, built in the 1970's and retired in the early 2000's it was a submarine rescue system designed to fly anywhere in the world within 24 hours and begin a rescue operation.

It was constructed by Lockheed in Sunnyvale, California, and the Draper designed control & Navigation system borrowed heavily from technology developed for the Apollo program.

DSRV-2 Avalon is on display at the Morro Bay Maritime Museum
https://morrobaymaritime.org/

Follow me on Twitter for more updates:
  / djsnm  

I have a discord server where I regularly turn up:
  / discord  

If you really like what I do you can support me directly through Patreon
  / scottmanley