Wärtsilä Corporation's recommended acquisition of Hamworthy plc, posting of Scheme Document

13 december 2011 Wärtsilä Corporation, Company Announcement, 13 December 2011, at 9.00 am (EET) On 22 November 2011, Wärtsilä and Hamworthy announced that they had reached agreement on the terms of a recommended offer for the entire issued and to be issued ordinary share capital of Hamworthy for 825 pence in cash per Hamworthy share. The acquisition will be effected by means of a Scheme of Arrangement under English law. Further to that announcement, Wärtsilä and Hamworthy are pleased to announce that the scheme document relating to the acquisition is being posted to Hamworthy Shareholders today. The scheme will need to be approved at the Court Meeting and will require the passing of a special resolution at the Hamworthy General Meeting. The scheme document, together with information incorporated by reference therein, will be available on the Investors section of Wärtsilä's website at www.wartsila.com. The expected timetable of principal events, UK time: EVENT TIME AND DATE((1)) Court Meeting 11.00 a.m. on 9 January 2012 General Meeting of Hamworthy((2)) 11.15 a.m. on 9 January 2012 Scheme Court Hearing (to sanction the 26 January 2012 Scheme)((1)) Effective Date((1)) 31 January 2012 Cancellation of trading of Hamworthy by no later than 8.00 a.m. on 31 shares((1)) January 2012 Notes: 1. These dates and times are indicative only and will depend, among other things, on the dates by which all necessary anti-trust clearances are obtained and the dates on which the Court sanctions the Scheme and confirms the associated Reduction of Capital. This timetable assumes that German and Norwegian anti-trust clearances are obtained by not later than 26 January 2012. 2. In the event that the Court Meeting concludes after 11.15 a.m., the General Meeting will follow as soon as possible thereafter. For further information, please contact: Atte Palomäki Group Vice President, Communications & Branding Wärtsilä Corporation Tel: +358 10 709 5599 atte.palomaki@wartsila.com For investor information, please contact: Pauliina Tennilä Director, Investor Relations Wärtsilä Corporation Tel: +358 10 709 5445 pauliina.tennila@wartsila.com Wärtsilä in brief Wärtsilä is a global leader in complete lifecycle power solutions for the marine and energy markets. By emphasising technological innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2010, Wärtsilä's net sales totalled EUR 4.6 billion with more than 17,500 employees. The company has operations in 160 locations in 70 countries around the world. Wärtsilä is listed on the NASDAQ OMX Helsinki, Finland. www.wartsila.com This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Wärtsilä Oyj Abp via Thomson Reuters ONE [HUG#1570835]