Howaldtswerke-Deutsche Werft
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. It competed with several other concepts, including Norway's Skjold class (part of a Raytheon led group).