Evertsen-class coastal defence ship

The Evertsen class or Kortenaer class was a class of coastal defense ships of the Royal Netherlands Navy. The class comprised Evertsen, Piet Hein and Kortenaer.

Design
The ships of the class were 86.2 m long, had a beam of 14.33 m, a draught of 5.23 m, and had a displacement of 3,464 ton. The ships were equipped with 2 shaft reciprocating engines, which were rated at 4700 ihp and produced a top speed of 16 kn. The ships had belt armour of 6 in and 9.5 in barbette armour. The main armament of the ships where three 8.2 in guns in a double and single turret. Secondary armament included two single 15 cm guns and six single 7.5 cm guns.