Design and description. The design of the Suffren class was derived from the preceding Duquesne class with more armor exchanged for less speed. The ships had an overall length of 194 meters (636 ft 6 in), a beam of 19.26 meters (63 ft 2 in), and a draft of 6.57 meters (21 ft 7 in). They displaced 10,160 metric tons (10,000 long tons) at standard load and 13,135–13,644 t (12,928–13,429 long ...