HNLMS De Ruyter and De Zeven Provinciën were the last solitary cruisers armed with

guns in the world. They were used by the Royal Netherlands Navy and Peruan Navy.

The initial design, dating from 15 November 1937, was never realized.

After WWII, the ships were still under construction resulting a renewed design process.

De Ruyter was commissioned on 18 November 1953 and served mostly as ¿agship

of a task group. On 13 February 1972 De Ruyter was transferred to Peru as BAP

Almirante Grau and ...

The Van Speijk class frigates were equipped with Dutch electronics/sensors. The British Leander design was chosen to enable rapid construction to replace elderly escorts for ASW duties and NATO patrol. The ships were thoroughly modernised in the late 1970's. Between 1986-1990 all six were transferred to the Indonesian Navy.