I think if Denmark is neutral then the straights should be open to any country. Germany should take Denmark to keep the UK fleet from entering….I will add this in my 6.1 rules coming out this weekend.
Naval Base Question
If you have a territory that contains an IC, and you build a Naval Base, can you build ships that turn as well, or do you build the base and then you can build ships on the next round?
Have to build on next turn. Newly built naval units may only be placed in sea zone with a Naval Base and IC that were there at beginning of turn.