This SAE Standard establishes the procedure for determining the operator duty cycle sound pressure level Lodc to which operators of powered recreational craft up to 24 m in length are exposed during typical operation as determined by marine engine duty cycle studies. This document describes the instrumentation, the required calibration procedures, the test site, the specifications for “standard craft”, the craft operating conditions, microphone positioning, test procedure, engine speeds for each of the Duty Cycle modes and the formula and table for calculating the Duty Cycle operator ear sound pressure level.
This document is subject to change to keep pace with technical advances as well as other international standards and practices.
Changes in this Revision: The sound pressure level measurements performed while applying this document are based on the Five-Mode Marine Engine Duty Cycle instead of a single engine speed. A calculation is required to obtain the Duty Cycle operator ear sound pressure level (Lodc). Provisions for type testing are provided along with specifications for Standard Craft.
Rationale
Review this standard and compare with changes to the ISO standard 14509-1, where the standard craft definitions originated. The table in 6.1 was updated to reflect the latest version of ISO 14509-1
The Marine Technical Committee develops and maintains SAE Standards, Recommended Practices and Information Reports for the development, production, application and testing of marine vehicles and equipment. The committee also maintains liaison with the American Boat & Yacht Council (ABYC), Canadian Coast Guard (CCG), International Council of Marine Industry Association (ICOMIA), International Organization for Standardization (ISO), National Fire Protection Association (NFPA), National Marine Manufacturers Association (NMMA), United States Coast Guard (USCG), and other organizations as necessary. The subcommittees formed under the committee's direction include: Marine Engine Fuel Systems Marine Electrical Systems Participants in the SAE Marine Technical Committee include OEMs, suppliers, consulting firms, government and other interested parties.
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