Wrt the Oriole, that is funded out of the very limited pot of money left over once the submarines, CPFs, and now AOPs get money for maintenance. Available funding has been smaller than real demand for at least 15 years, so there is both an acute and cumulative effect of continuing to maintain it that has directly and indirectly impacted capabilities.
It has directly gotten funding that would have otherwise gone towards MCDVs, tugs, barges, dive tenders and other support vessels that directly support actual operational capabilities.
It also came up on top of needing a major refit at the cost of several million dollars to bring it up to basic SOLAS requiremetns the same time as CFAV Quests needed a DWP to stay operational, so we lost one of the quietest ships on the planet that did a lot of unique research for some Admirals pet yacht.
I hope the Oriole is disposed of with cleansing fire, on land, maybe after some time getting crapped on by enough seagulls that it becomes a hazmat zone, and smolders into an embarassing remnant of poor decisions and wasted time and effort.