The Norgies want an ASW focused vessel...and they want it in the water at a certain point. Plus if they want to upgrade the radar at a later point they can do. They want a vessel in the water more than anything....although given the Fridtjof Nansen Class will be at most 24 years old in 2030, and they can't man them all at present I do wonder if a little slippage can be accommodated...they don't want the expense of an MLU, particularly for SPY-1F, but a lot of the class have had a similar life as Type 45, not as many sea days as you'd expect, even with the loss of the Helge Ingstad.