Plejad-class torpedo boat (1907)

During the turn of the 20th century, Sweden maintained a modern and powerful navy and regularly invested into the fleet to stay maintain an edge over other navies in the Baltic.^[1]: 355 The first ship in the class, HSwMS Plejad, was a prototype built at Le Havre in 1905. While the armament varied for the first three boats, the class was armed with two 3 lb (1.4 kg) guns, two 6 lb (2.7 kg) guns, and two 18 in (46 cm) torpedo tubes. Aside from Plejad, the class was built domestically in Sweden and built between 1907 and 1910.^[2]: 260 Other characteristics of the ships varied, such as displacement.^[3]: 370

Starting 1926, the ships were served as patrol boats. The torpedo tubes were removed and replaced with minesweeping gear. Two years later, each ship was renamed Vedettbåt [Sn] followed by a unique number.^{[1]: 358 [3]: 370} Most of the vessels were stricken in the 1940s and disposed of over the next several years.^[1]: 358