The Environmental Protection Agency today announced its decision to issue a final rule effective Nov. 2, 2020 amending the national marine diesel program with relief provisions in order to address concerns related to finding and installing Tier 4 marine diesel engines in certain high-speed commercial vessels.
The rule specifically provides additional lead time for qualifying engines and vessels, and also finalized proposed approaches for streamlining certification requirements to facilitate or accelerate certification of Tier 4 marine engines with high power density.
