| Displacement | 2200t normal |
|---|---|
| Length | 67.0m pp, 70.0m wl |
| Width | 12.4m |
| Draught | 5.3m |
| Machinery | 1-shaft recipro, 2500ihp |
| Fuel | coal 280t |
| Speed | 14kt |
| Armour | belt 88-115mm |
| Armament | 3-17cm gun (1x3), 6-15cm gun (1x6), 4-1pdr gun (1x4), 2-36cm TT (Hiei 1) |
| Complement | 308 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| Kongo | FY1875 | UK Earles | 1875. 9 | 1877. 4 | 1878. 1 | 1898. 3.21 CD3 1909. 7.20 disc | |
| Hiei | FY1875 | UK Milford Haven | 1875. 9 | 1877. 6.12 | 1878. 3 | 1898. 3.21 CD3 1911. 4. 1 disc |