Various IMCA/TER associates are affiliated with the following organizations:
- American Arbitration Association
- American Boat and Yacht Council
- American National Standards Institute
- Canadian Standards Association
- International Association of Arson Investigators
- International Marine Certification Institute
- National Association of Boat Manufacturers
- National Association of Corrosion Engineers
- National Association of Fire Investigators
- National Association of State Boating Law Administrators
- National Fire Protection Association
- National Electrical Manufacturers Association Product Liability Committee
- National Marine Manufacturers Association
- Power Tool Institute
- Royal Institution of Naval Architects
- Society of Automotive Engineers
- Society of Manufacturing Engineers
- Society of Naval Architects and Marine Engineers
- Society of Small Craft Designers
- U.S. Technical Advisory Group to the Organization for International Standards (Recreational Craft)
- Various Industry Advisory Councils for Underwriters Laboratories
- Westlawn School of Yacht Design