Gregg InscoreGregg Inscore

Joining the NMMA inspector’s team in late 2015, Gregg brings his extensive marine industry background of over 25 years of engineering and design experience. Having worked for several leading boat builders in the U.S., Gregg has in-depth knowledge on the customer side of the NMMA certification process, in addition to his expertise in domestic and international standards. Gregg is a longtime boater, and enjoys offshore fishing and surfing along the Florida coast

Clyde HeadClyde Head

Clyde has more than 25 years of experience in the boating industry working with brands such as Harbor Master, Marinette, Stolkraft and Drifter. He has a B.S. in Electrical Engineering from Vanderbilt University and an M.S. in Management. Clyde is also a veteran of the U.S. Navy.

In addition to inspecting boats, yachts, houseboats, PWCs and boat trailers for NMMA; he is an inspector for the International Marine Certification Institute (IMCI) and an instructor for the American Boat and Yacht Council (ABYC).

Steve CarrierSteve Carrier

Steve has more than 30 years of marine industry experience. Steve has worked for several major boat manufacturers, holding management positions in engineering, customer service and quality assurance. Steve has been involved with standard development and compliance for 25 years. He became a certification inspector for IMCI in 1999, is a member of the ABYC Fuel & Ventilation Committee and is a former member of the Electrical Project Technical Committee. He is certified by the ABYC for Standards Accreditation and Electrical Marine Technician.

Slawek Piotrowski

Slawomir (Slawek) conducts certification inspections for NMMA and IMCI across Poland and surrounding areas. He has wealth of experience regarding yacht construction, coming from from a theoretical and practical background. He graduated from the University of Technology, specializing in designing and building of boat as well as HVAC systems. Working as a sailor, for many years, he has several certifications, proving his knowledge and skills, including: Yacht Master Ocean, MCA IYT - Master of Yachts 200 Tons Offshore; Motor Boat Master, and Sailing Instructor. At the moment he runs his own Boat Yard in Poland, where thanks to modern CNC mailing machine he build plugs, molds, prototypes and serial production of sailing and power boats. 

 Denis BonneauDenis Bonneau

Before being contracted by NMMA in 2006, Denis was a marine surveyor with comprehensive assignments ranging from condition and value surveys to electrical failures. For many years, Denis served Sea Ray Boats as an assembly supervisor, manufacturing engineering technician, prototype development technician and ABYC & USCG compliance specialist. Denis is also experienced in marine repair.

Ulrich HeinemannUlrich Heinemann

Ulrich (Uli) has extensive experience in the boating industry and serves NMMA in the European Union where he is managing director of the International Marine Certification Institute in Brussels, Belgium. Uli’s formal education includes a degree in professional engineering for naval architecture and ocean engineering from Aachen University in Aachen, Germany. Uli is an inspector for both NMMA Certification and CE Certification and currently sits on multiple ISO technical committees.

Ulrich ManigelUlrich Manigel

Ulrich (Ulli) joined NMMA’s team of inspectors in 2006 covering NMMA Certification as well as CE Certification in the European Union. He is the certification manager for IMCI and has more than 12 years of boat building experience. Additionally, Ulli is a member of the Experts Association of Boat- and Shipbuilding and the German Boat- and Shipbuilding Association.

Tim WithringtonTim Withrington

Tim recently signed on with NMMA to inspect manufacturers seeking NMMA Certification in Australia. He is an inspector for IMCI as well. Tim’s qualifications include a Bachelor’s degree in Engineering Naval Architecture from Australian Maritime College as well as ten years post graduate experience in the design and analysis of steel, aluminum and FRP commercial and recreational vessels. Tim has more than 14 years experience as a trade certified boat and shipbuilder and is now director of ASEA Yacht Design in Miami, Queensland.

Marc NugentMarc Nugent

Marc has worked in the marine industry in many different aspects, from Hydrostatics testing to Marine Engineering. Marc earned a B.S.E. from the University of Michigan in Naval Architecture and Marine Engineering. He has worked in the boat building industry as a design engineer, project manager and wooden boat builder. In 2002 he started his marine surveying and consulting business. He is currently a member of Society of Accredited Marine Surveyors, and ABYC. Marc is avid sailor and currently holds board positions with the Grand Traverse Yacht Club, and Traverse Area Community Sailing.