It is somewhat embarrassing that I don't know the answer to this by now, but I can't figure it out.
How many ships is Belgium supposed to have in its force pool? I only have the ability to build one extra merchant unit and one transport ship unit (both of which I built). At this point I have absolutely no ships in my force pool. I upgraded my harbor to a naval base because I thought that it would help, but my force pool is still empty. So can I do something to increase the force pool in game (without a script), or do I have to wait until it increases by some sort of event later on (or does it require a script)?