Interesting article, but I am surprised they were not doing these things prior to this time line. Prior to major failure. Again the Military is so far behind on industry procedures it is almost silly. Especially considering the amount of money the Military spends. The time line sin the article seems a bit slow. Currently there are companies who scan large areas including isolated spots. Every day, I wonder if the Military needs an entire overhaul of their Maintenance contracts. Especially the ones that perform such crucial functions and seem to be behind on the times.There is the occasional article in the MEJ, but there is a lot more being tried and used that doesn't make articles. It's done during the operational cycle as it's too late to do it in the DWP to plan the work, so once in a while they go onto the synchrolift for pre-docking surveys.
https://www.canada.ca/content/dam/dnd-mdn/documents/mej/44-088-maritimeJournal-109.pdf#page=9
Everyone on the ships, and people who regularly do work on the ships, but the photo of the hammer through the hull made it pretty hard for the BGHs to ignore that they are in really bad shape. That defect was actually found from NDT scanning with a little robot, then was verified by a DND SME.
Those Floor scan arrays systems are pretty neat to use. You can get them where they roll themselves along. Work good for outside vessel areas. They even work underwater.