OMC International is an Australian maritime engineering company specialising in ship motion analysis, Under Keel Clearance (UKC) systems and channel design. Over the past 18 years, its unique Dynamic Under Keel Clearance (DUKC®) system has improved the safety and efficiency of large ships moving through shallow waterways. DUKC® is in 22 ports worldwide and has helped nearly 90,000 ships safely move in and out of ports, delivering more than US$15 billion in economic benefits to port users.

In 2010, OMC Founder and Executive Director Dr Terry O'Brien, who is the innovator of his company's DUKC® technology, was awarded a Medal of the Order of Australia (OAM) for services to the maritime transport industry.