You can find up-to-date and company-specific certificates in the CERTIFICATE LIBRARY.
Each of the DOF Group companies holds these certificates where relevant:
ISO 9001:2008 / ISO 9001:2015
Quality Management System Certification
ISO 14001:2004 / ISO 14001:2015
Global External Environmental Certification
International Contractor (ICo) Member regarding Diving, Marine, Offshore Survey and Remote Systems & ROV Divisions based World-wide.
Safety and Occupational Health Standards