According to the wiki, the cost for retooling a shipyard for a new class is half the cost of the class, plus a quarter for each slipway.
I just started retooling for a class that costs 1225.6 BP. The shipyard in question has 3 slipways, so based on the calculation from the wiki, the cost should be 1532 BP, right?
Instead, it only costs 332.5 BP. Is it because I'm retooling for a ship that's similar to the design it was already tooled for (it's just the same ship with updated guns)?