Acergy S.A. was an international offshore seabed to surface engineering and construction company previously known as Stolt Offshore and Stolt Comex Seaway and was part of the Stolt-Nielsen Group until 2005. The company was registered in Luxembourg and had its headquarters in London in the United Kingdom as well as offices in Stavanger, Norway; Aberdeen, United Kingdom; Suresnes, France; Houston, United States; Rio de Janeiro, Brazil; Perth, Australia; St. John's, Canada and Singapore. The company was listed on the Oslo Stock Exchange and NASDAQ. In 2011 the firm merged with Cayman Islands-based Subsea 7, Inc. to create Subsea 7 S.A.