In case anyone was interested in tweaking the comparative naval strengths of the various nations, based on what they had historically, I’ve done a bit of research. Â
First, here’s a brief description of what was implied by the terms “cruiser†and “battleship.† Ships of this era typically had three different sizes of guns – primary, secondary, and tertiary.  For battleships, the primary guns were usually 10â€â€“12â€, the secondary battery was 6â€- 9â€, and the tertiary battery was 3â€-5â€.  Cruisers would go down a notch, with their main guns being 6â€-9â€, and secondary/tertiary armament in the 3â€-5†range.
To complicate matters a bit, there were two distinct types of battleships:  Dreadnaught and pre-Dreadnaught.  (I’ll abbreviate Dreadnaught as DN, and pre-Dreadnaught as PDN).  Prior to the launch of HMS Dreadnaught in 1906, a typical battleship would have one primary gun turret forward, and one aft, with 1-2 guns per turret.  Their secondary/tertiary armament was arranged in broadsides of 4-6 guns of each type per side.  DN class battleships, on the other hand, usually had 8-12 guns of the primary caliber, in forward/aft turrets, meaning they could bring most or all of them to bear in a broadside to either starboard or port.  DNs also tended to be bigger, faster, and more heavily armored (except for battlecruisers, which sacrificed armor for even greater speed).
Okay, here’s my best estimate of how many of each type of ship each nation had (read DN/PDN/Cruiser):
Britain: Â 34/41/102
Germany: Â 21/22/47
France: Â 4/15/24
Austria: Â 4/9/11
Italy: Â 6/10/8
Russia: Â 4/9/14
USA: Â 10/21/33
Turkey: Â 1/2/4
The one Turkish DN is actually the German battlecruiser Goeben, which was trapped in the Black Sea when the war began, and “loaned†to the Turks.  I already subtracted this from the German totals.  I did not include any ships that entered service in 1915 or later.  Also, some of the USA ships were in “reserve†status at the beginning of the war, but were reactivated by the time the US entered in 1917.
Okay, now to get these down to ratios that are more in line with the scale of A&A. Â I assigned each DN a value of 1, and each PDN a value of 0.6. Â I then divided the result by 10, to yield battleships:
Britain: Â 6
Germany: Â 3
France: Â 2
Austria: Â 1
Italy: Â 1
Russia: Â 1
USA: Â 2
Turkey: Â 0
For cruisers, I just divided by 15 to get:
Britain: Â 7
Germany: Â 3
France: Â 2
Austria: Â 1
Italy: Â 1
Russia: Â 1
USA: Â 2
Turkey: 1 (had to fudge a bit to give them a navy at all)
Now, if you want, you can cut the US Navy in half, since about half was usually deployed in the Pacific. Â You could also cut down the British fleet slightly, since they had to maintain a presence in the Pacific as well.