IMO Tier III? Probably at this stage you know all about it. If not, this short but very accurate explanation on boatinternational is recommended. Only very recently we joined the seatrials of another great Dutch superyacht. A full TIER III compliant Dutch superyacht. Together with our top notch SCR partner we supplied a custom TIER III compliant exhaust system that was already tested and approved at the engine manufacturers testbenches long ago. But in the end, the sea trials are always exciting. We can only say that we have enjoyed it in all manners!