Poland's once proud and dynamic ship-building industry.
The entire industry that was built on workers being treated badly (you were around, you should remember the complaints of the shipyard workers that they didn't even have basic safety equipment), built on cheap coal being extracted at huge human cost (again, you'll remember the shocking conditions that miners worked in!) and a huge amount of debt in order to produce the steel needed for the shipyards. The shipyards themselves were only viable as long as they could use cheap coal, cheap steel and cheap iron ore imports - all of which no longer exists.
There was nothing proud about shipbuilding in Poland - it was an industry that came at immense human cost. Poland is doing a fantastic job with producing smaller ships, and it should be encouraged as much as possible. But we don't need or want to return to the days of heavy shipbuilding.
It's PiSonomics, which means that the taxpayer will have to fund unprofitable shipyards so that they can provide plenty of non-jobs for people with no ambition.