Kockums AB is a shipyard in Malmö, Sweden, owned by the Swedish defence company Saab Group. While having a history of civil vessel construction, Kockums' most renowned activity is the fabrication of military corvettes and submarines.Kockums worked with Northrop Grumman and Howaldtswerke-Deutsche Werft (HDW) to offer a Visby-class corvette derivative in the American Focused Mission Vessel Study, a precursor to the Littoral Combat Ship program.