1947
Wärtsilä acquires most of the ceramics factory Arabia Ab’s share capital and later the entire company.
1950
Wärtsilä acquires the Nuutajärvi glass factory.
1975
Wärtsilä acquires the John Stenberg engineering workshop.
1989
Wärtsilä Diesel acquires the French SACM, a manufacturer of high-speed engines.
Wärtsilä acquires a majority holding in the Dutch company Stork Werkspoor B.V., which makes medium-speed engines. This company is renamed Stork-Wärtsilä Diesel B.V.
2001
Wärtsilä acquires the Swedish service company Ciserv Ab.
2002
Wärtsilä acquires a leading global supplier of marine propulsion systems, John Crane-Lips, which continues to operate under the name Wärtsilä Propulsion.
2003
Wärtsilä acquires the marine engine maintenance company Caltax Marine Diesel BV, which is given the new name Ciserv Netherlands BV.
2005
Wärtsilä acquires DEUTZ AG's medium and large marine engine service business.
Wärtsilä acquires Automation equipment and servicing control company Gerhardt Holding Co. Inc.
2006
Wärtsila acquires supplier of power and automation systems Aker Kvaerner Power and Automation Systems AS.
Wärtsilä acquires marine automation company Total Automation Ltd.
Wärtsilä acquires German company INTEC Injectortechnic specialized in fuel injection equipment.
Wärtsilä acquires the Swedish ship repair company Stockholms fartygsreparationer.
Wärtsilä acquires the German ship design company group SCHIFFKO.
2007
Wärtsilä acquires the entire business of the South African propeller repair company Marine Propeller (Pty) Lts in Cape Town, South Africa.
Wärtsilä acquires the Swedish company Senitec AB specialized in environmental technology products for separating waste.
Wärtsilä acquires the UK-based propeller repair company McCall Propellers Ltd.
Wärtsilä acquires part of the marine business of Railko Ltd. in the UK, a company specializing in syntetic stern tube bearing technology.
Wärtsilä acquires a Scottish company Electrical Power Engineering (Scotland) Ltd specialized in electrical power engineering solutions for marine, offshore, industrial and utilities segments.
2008
Wärtsilä acquires Maritime Service AS, a Norwegian company specializing in ship service, mechanical and reconditioning services.
Wärtsilä acquires the Danish company International Combustion Engineering A/S (I.C.E) specialized in project engineering and the service and repair of steam boilers and ancillary burner systems.
Wärtsilä acquires the German company Claus D. Christophel Messund Regeltechnik GmbH (CDC), which specializes in the design, delivery and service of automation systems for ship owners and yards.
Wärtsilä acquires the global ship design group Vik-Sandvik, a leading independent group providing design and engineering services to ship owners and the ship building industry worldwide.
Wärtsilä acquires Navelec SAS, a French company specializing in marine navigation and communication systems, electrical marine services, and control and automation services.
Wärtsilä acquires a leading naval architecture and ship design company Conan Wu & Associates Pte Ltd (CWA), headquartered in Singapore.
2011
Wärtsilä acquires the Swedish company Cedervall, one of the leading manufacturers of shaft seal and bearing systems for the marine industry.
2012
Wärtsilä acquires Hamworthy, a global provider of specialist equipment and services to the marine, oil & gas and industrial sectors.
Wärtsilä acquires the assets and business of MMI Boiler Management Pte Ltd., a Singapore-based company specialising in the service and maintenance of boilers for marine and industrial applications.
2014
Wärtsilä Corporation acquires L-3 Marine Systems International, a business sector within L-3’s Electronic Systems business segment primarily focused on the commercial ship industry.
2016
Wärtsilä acquires Eniram, a Finland-based technology company providing the marine industry with energy management and analytics solutions.
Wärtsilä acquires the USA and Canada based company Weir American Hydro, the leading supplier and installer of large equipment upgrades and servicing for the hydroelectric and water distribution industries.
2017
Wärtsilä acquires Greensmith Energy Management Systems Inc., a US-based leader in intelligent energy storage technology and solutions.
Wärtsilä acquires Puregas Solutions, the Sweden based provider of turnkey biogas upgrading solutions.
Wärtsilä acquires Guidance Marine Limited, a technology leader in the marine industry for sensor solutions relating to dynamic positioning and other vessel control systems.
Wärtsilä acquires Trident B.V., a Netherland based company specialised in underwater ship maintenance, inspection, and repair services.
2018
Wärtsilä is expanding the service offering of its QuantiServ business line with the acquisition of the American engineering company LOCK-N-STITCH.
Wärtsilä acquires Transas, a global market leader in marine navigation solutions
Wärtsilä acquires Burriel Navarro, S.L, a company operating in underwater services in the main ports of Spain.