ClassNK Issues First Ever Statement of Fact for Tier III NOx Emissions for an SCR-equipped Diesel Engine. ClassNK announced today that it had awarded its first ever Statement of Fact for Tier III nitrogen oxide (NOx) reductions to a marine diesel engine incorporating a Selective Catalytic Reduction (SCR) system. The document, issued on 1 November 2011, verifies that the NOx emission measurement results for the engine, fitted with a pre-turbocharger SCR system developed by Hitachi Zosen Corporation…