The origins go back to the vessels owned and operated by Irgens Larsen AS, and can be traced in various forms through Kvearner Shipping AS and Swan Shipping ASA. During 2001 an intense reengineering of the company and its business strategy was put in motion. In December 2006, STAR Reefers embarked on a policy of vertical integration by deciding to form its own Ship Management Company in Poland and Star Reefers Poland was formed in January 2006 to manage the vessels. In July 2015, STAR Reefers Poland changed its name to SIEM Ship Management due to owners decision to diversify the fleet portfolio.