Will the enemy warships respawn?

[lunario]

Started a new campaign.
Sunk the two battleships in Scapa Flow.
On my third patrol to the northwest coast.
Encountered and sunk one "Queen Elizabath" battleship west of Norway.
Encountered two battleships north of the port Low Ewe where AMCs are generated.

I'm wondering if the warships will respawn in the future.
If not then there will be no need to go to Norway in 1940/3.