The D design from 22 November 1906 (real world)

The D design from 22 November 1906 was nominally a battlecruiser. The specifications were as follows:

Length between perpendiculars:  565ft
Estimated length overall:       607ft
Beam:                            81ft
Mean draft:                      27ft

Speed:                           24 knots
estimated power:                 45,000 SHP

Armour:                  Lower belt: 10in
                        Upper belt:  8in
Normal displacement:         20,700 tons

This ship would have been a good opponent for the German battlecruisers, as its protection was adequate against 11in guns.