ISO CE Certification

Every MJM is ISO Certified to the highest level achievable. Under 40 feet MJMs are ISO CE Certified Category B “Offshore” while the 43zi, 50z and 53z are Certified ISO CE Category A “Ocean” by the International Marine Certification Institute.

Category A Ocean is the toughest standard covering vessels 40’ and over and designed to be self-sufficient for extended voyages. It is defined as the category of boats considered suitable for seas of up to 7 meters (23 feet), significant wave height and winds of Beaufort Force 9 (41-47 knots) or less, but excluding abnormal conditions such as hurricanes.

While boaters aren’t likely to subject themselves to conditions even approaching the ones described, it’s reassuring to know your boat has been designed and built for the ultimate in seaworthiness and safety.



Because MJMs are built to the standards of the International Marine Certification Institute, they are certified to the highest possible rating, Category A Ocean and Category B Offshore, where stability and driving control are heavily weighted.  Stability is critical in a powerboat’s ability to handle the varied conditions of offshore cruising.

The design of MJMs with their low vertical center of gravity and the dynamic stability created underway by the hull shape give MJMs the exceptional sea keeping ability not found in other yachts.


In the video below, noted naval architect Doug Zurn shows how stability is the determining factor in a boat’s safety and performance.

A Zurn Design