The two units in Swedish service were classified as destroyers until 1953, then re-classified as corvettes. Although commonly referred to as torpedo boats due to their smaller displacement, the Spica class armaments were similar in design to destroyers (their design was influenced by the  then in development) and were intended for anti-submarine duties, although they often had to fight aircraft and surface forces as well. Twenty-three vessels were lost during World War II.
The two Swedish units in service were initially classified as destroyers until 1953, after which they were re-classified as corvettes. Despite their smaller size, the Spica class ships were designed with destroyer characteristics and intended for anti-submarine warfare, but often had to engage aircraft and surface vessels as well. Twenty-three vessels were lost during World War II.