HSwMS Kalmar explained

Five warships of Sweden have been named Kalmar, after Kalmar:

• , a warship launched in 1677.
• , a warship launched in 1749.
• , a galley launched in 1749 and stricken in 1810.
• , a launched in 1943 and stricken in 1978.
• , a launched in 1990 and since in active service.