A couple of thoughts on this.
First, this is where I am coming from:
Can Germany afford to be a naval power?
Assume the worst case for Germany, and that is when the Allies are all concentrating on Berlin. That is called KGF, or Kill Germany First. Russia has about 5 rounds before they need to spend a nickel on Japan because it takes that long for Japan to threaten Moscow. So assume that between 24 and 32 Russian IPCs are heading west every round. If Germany is down money to Russia but up money in Africa, they could maintain a paycheck between 30 and 42. On average, Germany will be ahead of Russia by somewhere between 6 and 10 IPCs. That has a few implications:
- That difference is not consistently enough to buy one boat every round and keep up with Russia.
- The US and the UK need to divert only two or three German units away from Russia to make the Eastern Front even between Germany and Russia.
If the Allies are really going KGF, then the UK has nothing better to do than to put boats in the water until the German boats are dead. That means the UK will buy 30 IPCs of boats and planes every round. Compare that with the 6-10 IPCs Germany can spare from Russia, and it is clear that the Germans can’t be naval builders for long even if the US does nothing.
That’s from Caspian Sub Policy Paper #11.
So in that context, building 1car in the Baltic and 1IC in WEU and you’ve spent 31 IPCs. The implication of building the IC is that you will build MORE navy, or you wouldn’t bother building the IC. So figure a minimum of 2 more units for 16 IPCs. **That is 47 IPCs in the water.** Based on the differential between the Russian and the German paycheck, Russia should be all over Germany with explosive growth.
R1 Russia builds something like 4inf 3art.  R2 if they see 1car 1IC they should build all tanks and go down Germany’s throat.
The Allies should be over-joyed to see those builds. Who needs to land UK and US units in Europe if Germany has no ground troops and Russia has a lot of Germany’s money?