In recent times, inspired by the elegantly simple naval rule set published on Kev Robertson's blog spot, I tailored them to 'fit' the heavy units of my Mighty Armadas battleship navies. These comprised vessels of the German Bismarck class, the Japanese Yamato class, and the United States' Iowa class (the identity of the last being for some time a matter of uncertainty).
The KEV set gave 1D6 per gun for each vessel, with 10 hits being required to 'sink' the target. I took that as my yardstick for a vessel of 40,000 tons, armed with 15-inch guns as the main armament. To cater for variations in size and hitting power, for it seemed to me 'wrong' for even Bismarck to be a direct match for Yamato, made the following adjustments:
1. That a battleship's protection be arrived at by dividing tonnage by 4000, and rounding. I did think to look at belt armour, but as that would contribute to tonnage anyhow, I decided to keep it simple.
2. That gun calibre be taken into account by adding or subtracting 10% of the number of gun barrels per inch difference from 15". This did make the 10 and 12-gun 14-inch carrying battleships rather more formidable than expected, but, unless I discover different I'll stick with the result. It would appear, then, that the Prince of Wales on its own ought to have been at least an even match for Bismarck!
So it dawned on me to build a table of battleship 'stats' for WW2. A further number of points to note:
3. I have added stuff that never appeared in KEV's rules, nor in my battles so far, the Heavy AA and speed in hexes.
3A. The Heavy AA is to be the yardstick for AA capability, which is the number of guns divided by 4. Apart from that arbitrary decision I haven't yet formulated rules for air attack and air defence. So they are there for ... inclusiveness, so far.
3B. KEV's rule set was for an 'open board'; I played it out on a hex field. There seems to have been some difference between modern 'fast' units and the older, slower types. I gave the 'fast' ships 3 hexes of speed compared with 2 for the slower, the cut-off point being above 25 knots.
This would probably indicate that my present maximum gun range of 6 hexes ought to be extended to 9, which puts rather a strain on my 4'x4'4" board!
4. The other point is my inclusion of the German 'pocket battleships'. Of course, they could never have occupied a place in a battle line, being in size no bigger than a heavy cruiser. Earlier designated 'panzerschiff'', they were indeed redesignated as some kind of armoured cruiser. I have included them for the sake of 'completeness', but they would probably be better placed among the stats for cruisers and smaller craft, with a whole different yardstick than those chosen here.
At any rate, I have posted them for what they might be worth to anyone.