"An interesting fact, the navy has really good quality control and they do it in an interesting way for submarines.
Submarines have some really difficult welds and all welds require very careful attention to procedure like changing out unused rods every hour or else the welds will fail. To insure quality, the first dive on the submarine takes is an extra deep dive that goes deeper than it’s meant to go. It’s for mechanical stress relief of the welds but also they take along all the heads of the shipyard and the Quality control personnel like chief inspectors aboard also because if it fails, this is where it’s gonna fail."
Original: https://www.reddit.com/r/MilitaryGfys/comments/a7dfg8/rollout_of_the_uss_delaware_ssn_791/ec28drv/
Sounds good, doesn't work
Submarines have some really difficult welds and all welds require very careful attention to procedure like changing out unused rods every hour or else the welds will fail. To insure quality, the first dive on the submarine takes is an extra deep dive that goes deeper than it’s meant to go. It’s for mechanical stress relief of the welds but also they take along all the heads of the shipyard and the Quality control personnel like chief inspectors aboard also because if it fails, this is where it’s gonna fail."
Original: https://www.reddit.com/r/MilitaryGfys/comments/a7dfg8/rollout_of_the_uss_delaware_ssn_791/ec28drv/