Watercraft Pass-By Test
The pass-by watercraft standard measures noise originating from a motorized watercraft that is operating on a calm body of water that is large enough to allow the watercraft to pass-by a designated monitoring site at cruising speed.
The standard allows a maximum noise level of 82 Lmax measured 50ft from the engine, running at 3,000 rpm. Test procedures were established by SAE International (previously known as the Society of Automotive Engineers).
The adopted single noise event threshold standards protect the quality of life for residents and visitors and reduce impacts to wildlife.
2019 Evaluation
- Status
- Insufficient Data to Determine Status or No Target Established
- Trend
- Insufficient Data to Determine Trend
- Confidence
- Low
Applicable Standard
N3: Watercraft pass by, 82 Lmax, 50ft from engine at 3,000rpm.
Key Points
- The pass-by threshold standards for watercraft were not evaluated due to insufficient data.
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Limited noise monitoring resources were prioritized to noise sources that are more responsive to management actions.
- Single noise event standards and methodologies for determining attainment are recommended for review and updating as part of the ongoing monitoring program and threshold update processes.