HNLMS Stier was a monitor built in England for the Royal Netherlands Navy in the 1860s.
The Schorpioen-class ships were designed to the same specification, but varied somewhat in details. The dimensions here are for , with her British-built sister ship, Stier, being marginally smaller. They were long overall, had a beam of and a draft of . They displaced and was fitted with a ram bow. Their crew consisted of 110âÂÂ136 officers and enlisted men.
Stier was powered by a pair of horizontal trunk steam engines, each driving a propeller shaft using steam from four square boilers. The engines produced and gave the ship a speed of . The Schorpioen-class ships carried a maximum of of coal that gave them a range of at a speed of . They were also equipped with two pole masts.
The Schorpioens were armed with a pair of Armstrong rifled, muzzle-loading guns mounted in the gun turret. The ships had a complete waterline belt of wrought iron that ranged in thickness from amidships to at the ends of the ships. The gun turret was protected by inches of armor and the armor thickness increased to around the gun ports. The base of the turret was also protected by 8 inches of armor and the walls of the conning tower were thick. The deck armor ranged in thickness from .