HSwMS Fylgia was an armored cruiser of the Swedish Navy, launched on 20 December 1905 at Finnboda slip in Nacka after her keel was laid in October 1902 by Bergsunds Mekaniska Verkstad. She was commissioned on 21 June 1907 and held the distinction of being the smallest true armored cruiser in the world at the time of her commissioning. The vessel served primarily as a training ship for naval cadets, a role she fulfilled for several decades, including after World War I and into the 1950s. Constructed as a relatively compact armored cruiser, Fylgia's service history includes a notable collision on 12 December 1927, when she collided with the Brazilian cargo ship SS Itapura at Salvador, Bahia. The collision resulted in the sinking of Itapura, but all 40 crew members aboard were rescued, highlighting her active engagement in international waters. In 1939–1940, Fylgia underwent a significant modernization. Her original coal-fired Yarrow-type boilers were replaced with four oil-fueled Phenoët-type boilers, enhancing her propulsion efficiency. Her three high stacks were replaced by two lower ones, giving her a more modern appearance. The refit also extended her main battery’s range and introduced a new fire control system with central gun control, improving her combat capabilities. Her air defense was extensively upgraded: the old 57 mm guns were replaced with four 57 mm M/89B-38B anti-aircraft guns, and additional weapons including two dual 40 mm mounts, a dual 25 mm, and a 20 mm gun were installed. After her modernization, Fylgia was assigned to neutrality patrol duties and continued to serve as a cadet training vessel until her decommissioning in 1953. She was sold for scrap in 1957, ending a distinguished career as a symbol of early 20th-century Swedish naval innovation and training.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.