Hildur-class monitor
type of warship from Sweden
The Hildur-class monitors consisted of seven monitors built for the Swedish Navy in the 1870s. They were sold in 1919 and most were converted into fuel oil barges. One such ship, HSwMS Sölve, has been converted into a museum ship.
Design and description
The Hildur-class monitors were designed by Lieutenant John Christian d'Ailly, from a proposal by John Ericsson, for the defense of Lake Mälaren and the Stockholm archipelago. The ships were 39.78 meters (130 ft 6 in) long overall and had a beam of 8.72 meters (28 ft 7 in). They had a draft of 2.7 meters (8 ft 10 in) and displaced 460 metric tons (450 long tons). The crew of the first two monitors, Hildur and Gerda, numbered 42 officers and men, the others had 48-man crews. Hildur and Gerda only had a stern rudder, the other had rudders at bow and stern. Bow rudders were fitted to the older ships when they were reconstructed.
The Hildurs had a pair of two-cylinder horizontal-return connecting-rod steam engines, each driving a single propeller using steam from two cylindrical boilers.
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