[1] The class comprised Koningin Regentes, De Ruyter and Hertog Hendrik.

[2] The ships were equipped with 2 shaft reciprocating engines, which were rated at 6,500 ihp (4,800 kW) and produced a top speed of 16.5 knots (30.6 km/h).

[5] The main armament of the ships were two 24 cm SK L/40 guns in single turrets.

[5][2] In fact, the German Navy used the same gun as main armament on their newest battleships of the Kaiser Friedrich III class.

3 single guns.The ships had three 45 cm (18 in) torpedo tubes of which two were submerged and one was above water at the bow.