And....new to procurement too...
I have in front of me right now one of the original MWM-Deutz Diesel Driven Fire Pump motors - now being maintained by another company because they bought out Deutz. The engine is 30 years old - they aren't made anymore. We're down to recycling the ones we have left into the repair/overhaul stream until they're beyond overhaul.
If we're buying 15 ship sets worth of stuff, we'll likely buy 15 - have all 15 delivered, and install them one at a time over the span of the construction period. The 15th will have been sitting in storage for probably a decade by the time we install it.
I recall getting the SHINNADS system installed on CHA in 1999 or 2000 - it was brand new, I was the first person to open the NAVO Laptop box - and the 4 year warranty had expired a couple of months prior. They were purchased, but there was no money to install them, so they sat in a warehouse until there was.
The logistics chain is limited by what the contracts say. Example - on the FELEX project, the thin client computer solution for the OPS room was superseded in service - but the contract specified installation of the original hardware, so they had to install all of the old computers as part of the refit, then when the ships were handed over, we had to do upgrades to that part of the system. They were installing 8 year old (or more) computers, knowing that they had to be replaced immediately after installation.
I highly doubt that the contracts will be written with such flexibility to allow mid-stream changes to hardware.
That would indicate that they 'learned lessons' from the FELEX project...
NS