水下噪声和外部空气噪声Underwater Noise and External Airborne Noise.pdf
GuidefortheClassificationNotation
UnderwaterNoiseandExternalAirborne
Noise
July2022
GUIDEFORTHECLASSIFICATIONNOTATION
UNDERWATERNOISEANDEXTERNALAIRBORNE
NOISE
JULY2022
AmericanBureauofShipping
IncorporatedbyActofLegislatureof
theStateofNewYork1862
©2022AmericanBureauofShipping.Allrightsreserved.
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Foreword(1July2022)
ThisGuidesetsforthrequirementsforthefollowingoptionalnotations:
●Underwaternoise:UWN(Type)andUWN+(Type)
●Externalairbornenoise:AIRN,AIRN+andAIRN-M(a,b).
TheunderwaternoisenotationsUWN(Type)andUWN+(Type)areapplicabletoself-propelled
commercialandresearchvessels.TheexternalairbornenoisenotationsAIRN,AIRN+andAIRN-M(a,b)
areapplicabletoalltypesofvessels.ThisGuideoutlinestheprocessandrequirementtoobtainthese
notations.Itprovidescriteriaonnoiselimitsandrequirementsformeasurementmethodandmeasurement
datapost-processing.
Forunderwaternoiseemissions,theIMOandtheEuropeanUnion(EU)havemadeeffortstosupportthe
reductionofunderwaterradiatednoise.IMOMEPC.1/Circ.833GuidelinesfortheReductionof
UnderwaterNoisefromCommercialShippingtoAddressAdverseImpactsonMarineLifeandEUMarine
StrategicFrameworkDirective,2008/56/ECaddressconcernsaboutunderwaternoisepollutionaffecting
marinelifeandhabitats.
Forexternalairbornenoiseemission,manyportshaveraisedconcernsaboutthenoisepollutioninport
surroundings.Excessiveshipexternalairbornenoisedisturbsresidentslivingnearportsandlowersthe
environmentalqualityofportareas.
ThisGuideisdevelopedinresponsetotheincreasin