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PA to Propose Marine Rule That Could Adversely Effect Large Yacht Builders. NMMA Task Force Being Organized

Monday, September 4, 2006

In 2006, an EPA diesel engine rule was implemented that required diesel engines to meet stringent new emission standards that for the most part required electronic controls. EPA is now considering the next generation of emission regulations that would require all commercial marine diesel engines > 600 kW (800hp) to achieve catalyst based emission standards. Commercial marine diesel engines < 600 kW would be required to meet lower emission standards based on engine size. For recreational marine engines EPA recognizes that space constraints would place too large a burden on the smaller diesel powered vessels such as cruisers and small yachts, but for larger yachts they feel that there could be sufficient space to install a catalyst along with the rather large catalyst support systems that need to accompany it. NMMA has raised serious concerns with EPA regarding catalyst systems on recreational vessels in both written comments to an Advance Notice of Proposed Rulemaking and in conversations with staff. These concerns include space constraints, but most important the availability of low sulfur fuel which is critical to operating a catalyzed engine. The United States is on schedule to have low sulfur fuel available and required soon after 2010, but unlike highway trucks, buses and locomotives, large yachts are not sold to be operated exclusively in United States. The USEPA has expressed a desire to learn more about this concern and has asked NMMA to organize a task force of potentially effected yacht manufacturers to discuss this with them. EPA recognizes that they do not have a clear understanding of the companies that manufacturer these large yachts and how many there are and where they are sold and operated. NMMA is requesting that the yacht manufacturers who wish to participate in this task force contact John McKnight at 202-737-9757 or

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Annual ICOMIA Boating Industry Statistics Book

Recreational Boating Industry Statistics