− | Equipped as standard main guns for all Japanese heavy cruisers. Initially, it was developed as the 20.0cm single mount (as seen on early Furutaka-class cruisers) but was later modified to fit 8.0 inches (20.3cm). | + | Equipped as standard main guns for all Japanese heavy cruisers. Initially, it was developed as the 20.0 cm single mount (as seen on early Furutaka-class cruisers) but was later modified to fit 8.0 inch (20.3 cm). |