Krupp was the dominant German industrial group of the late nineteenth and twentieth centuries, with significant marine engineering activity through its shipbuilding subsidiaries (principally Germaniawerft at Kiel) and its diesel engine licensee operations. The Krupp marine business was eventually consolidated through corporate mergers into ThyssenKrupp AG in 1999, with the marine engineering activities organised within ThyssenKrupp Marine Systems (TKMS), now one of Germany’s principal naval shipbuilders. The Krupp lineage in marine engines specifically is less direct than its lineage in shipbuilding and steel, but the company’s role in licensed marine diesel production and in supplying naval auxiliaries through the early twentieth century makes it an important reference in German marine engineering history.
Foundation of Krupp
Friedrich Krupp founded a steelworks in Essen in 1811, initially producing high-quality crucible steel. Under his son Alfred Krupp, the company became the dominant German steelmaker of the nineteenth century, with significant production of cannon, railway wheels, and structural steel. Through the late nineteenth and early twentieth centuries Krupp diversified into shipbuilding (the Germaniawerft yard at Kiel was acquired in 1896), industrial machinery, mining equipment, and a broad range of military and industrial products.
Germaniawerft and shipbuilding
The Germaniawerft yard at Kiel, acquired by Krupp in 1896, became one of the principal German shipbuilders. Through the early twentieth century the yard built warships and merchant vessels for German owners, with significant naval orders from the Imperial German Navy. Through the First World War Germaniawerft produced large numbers of submarines and destroyers, and through the inter-war period continued naval and merchant production.
Krupp’s marine diesel engine activities were largely concentrated at Germaniawerft through licensed agreements with Sulzer and other licensors. The yard built complete vessels including the propulsion machinery, with the diesel engines either licence-built in the Kiel works or supplied by external Krupp subsidiaries.
After the Second World War, Germaniawerft was significantly damaged and operations were progressively wound down. The yard was eventually closed, with shipbuilding capacity reorganised at other Krupp marine facilities.
Krupp MaK and the medium-speed marine diesel business
A more direct Krupp marine engine lineage runs through Krupp MaK Maschinenbau Kiel, which was Krupp’s medium-speed marine diesel engine builder based at Kiel. MaK (Maschinenbau Kiel) had been founded in 1948 as a separate Kiel engineering company and was acquired by Krupp in 1962. Under Krupp ownership MaK developed a comprehensive medium-speed four-stroke marine engine product range that became widely deployed on European and global ferries, naval auxiliaries, and offshore vessels.
In 1997 Krupp sold MaK to Caterpillar Inc. (covered in a separate article), with the Kiel works continuing to produce medium-speed engines under Caterpillar Marine ownership. The MaK product range remains in production within Caterpillar Marine in 2026 and is one of the most successful continuing legacies of Krupp’s marine engineering activities.
ThyssenKrupp consolidation
In 1999 the historical rivals Thyssen and Krupp merged to form ThyssenKrupp AG, ending nearly two centuries of separate corporate identity. The combined ThyssenKrupp organised its marine activities within ThyssenKrupp Marine Systems (TKMS), which incorporated:
- Howaldtswerke-Deutsche Werft (HDW) at Kiel (a former East German naval shipbuilder).
- Blohm + Voss at Hamburg (a major naval shipbuilder, now divested).
- Selected other German naval and merchant shipbuilders.
TKMS is now one of Germany’s principal naval shipbuilders, with focus on conventional submarines (the Type 212 and Type 214 classes that have been exported to several navies), surface combatants, and naval support craft.
A particularly notable TKMS subsidiary is Kockums (the Swedish submarine builder, covered in a separate article), which was acquired by HDW in 1999, became part of TKMS through the HDW absorption, and was eventually sold to Saab AB in 2014 as Saab Kockums.
Engineering heritage
The Krupp marine engineering heritage is significant for several reasons:
- Germaniawerft naval shipbuilding through two world wars and the inter-war period.
- Krupp MaK medium-speed diesel engines, now continuing as the Cat Marine M-series under Caterpillar ownership.
- HDW and TKMS submarine production, building on the Krupp shipbuilding legacy.
- Consolidation of much of the German naval shipbuilding industry under TKMS.
The Krupp corporate archives are preserved at the Krupp Archive in Essen, where they form one of the most significant documentary records of German industrial history.