Spark-Ignition Marine Engines and Watercraft (SIME/SIMW) - Latest News

This page last reviewed December 5, 2014

Latest News

Provided below is information associated with the latest Spark-Ignition Marine Engines and Watercraft (SIME/SIMW) public outreach event, either completed or forth-coming.  For access to historical event documents please visit the SIME/SIMW Public Outreach Archive.

Date Description
August 24, 2015 The Board approved the SIMW evaproative rulemaking on February 19, 2015. Staff is working to complete the rulemaking process which is expected to be finalized by the end of this year. The rule will be implemented in model year 2018. You can check the status of the rulemaking on the rulemaking webpage.
May 23, 2014 The draft regulation, draft test procedures, draft certification application, and workshop information for the upcoming SIMW workshops are available for viewing and can be found here:
May 22, 2014 The California Air Resources Board (ARB) will be holding a series of public workshops for spark-ignition marine watercraft on May 28 in El Monte and June 4 in Sacramento. The presentations for the workshops are available for downloading and viewing: El Monte Presentation and Sacramento Presentation.
May 9, 2014 The California Air Resources Board (ARB) will be holding a series of public workshops to discuss updates to the proposed evaporative emission regulation, test procedures, emissions inventory and certification process for spark-ignition marine watercraft. The workshops will be held in two locations and each workshop will cover the same topics. The first workshop will be held on on May 28, 2014 at 1:00 p.m. at ARBís El Monte office. The second workshop will be held on June 4, 2014 at 1:00 p.m. at ARB's Sacramento office. Further details regarding the workshops can be found here: Workshop Notice.
January 16, 2014

Marine Outboard Catalyst Research Project

In June 2011, ARB contracted with Mercury Marine to demonstrate the feasibilty of equipping small outboard marine engines with catalytic converters, and to evaluate their emissions performance and durability. Mercury Marine developed, and comprehensively tested several catalyst-equipped prototype engines ranging from 6 hp to 40 hp over a period of 350 hours in a real-world, salt-water environment. Mercury Marine also evaluated the extended durability of two larger outboard engines (i.e., 200 hp) equipped with catalytic converters, which had previously been developed and evaluated in ARB's Innovative Clean Air Technologies project (final report available here: ICAT # 06-01). The results of both of these demonstration projects are expected to provide guidance for the adoption of future outboard marine exhaust emission standards in California. A final report of the completed research for the second-phase demonstration project (ARB Contract #10-629) is available here: Final Report.
September 23, 2013 ARB staff presented an update to the Spark-Ignition Marine Vessel (SIMV) evaporative proposal at the 2013 International Boatbuilder Exhibition and Conference on Septemeber 18, 2013. You can view the presentation here: 2013 IBEX Presentation
November 30, 2012 The final Spark-Ignition Marine Engine amendments, which were adopted by the Air Resources Board on December 16, 2011, were filed with the California Office of Administrative Law (OAL) on October 26, 2012. OAL has until December 12, 2012, to render a decision. On March 22, 2012, a Notice of Public Availability of Modified Text was posted and made available for a fifteen-day public comment period. On November 15, 2011, a Notice of Change in the Public Hearing Date was posted, which rescheduled the date of the hearing from December 15, 2011, to December 16, 2011. On November 4, 2011, an Errata was posted to provide minor corrections to the staff report that had been posted October 26, 2011. The applicable regulatory documents for the above indicated actions can be found at the following link:  Board Hearing Regulatory Materials
October 28, 2011 On December 15, 2011, the Air Resources Board will consider proposed amendments to the California regulations and test procedures for SORE/LSI/OHRV/Off-Road CI/Rec Marine.  Specifically, the discussion will focus on test procedures for SORE and Tier 4 Off-Road CI, and the exhaust emission test fuel for off-road SI engines, equipment, and vehicles. The meeting notice, staff report, and all other regulatory documents can be found at the following link:  Board Hearing Regulatory Materials
May 19, 2010 The draft test procedures for the Spark-Ignition Marine Vessel regulation is now available for download and viewing:

May 12, 2010 The draft regulation to control evaporative emissions from Spark-Ignition Marine Vessels is now available for download and viewing: Draft Marine SI Regulation
April 28, 2010 A public workshop to discuss a proposal to regulate evaporative emissions from Spark-Ignition Marine Vessels will be held today in El Monte. The presentations for today's workshop are available for downloading and viewing: Evaporative Proposal Presentation and Certification Presentation.

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