ISO 14509-3:2009

Name: ISO 14509-3:2009 — Small craft — Airborne sound emitted by powered recreational craft — Part 3: Sound assessment using calculation and measurement procedures
SKU: ISO 14509-3:2009
Price: 25 EUR
Availability: InStock

Small craft — Airborne sound emitted by powered recreational craft — Part 3: Sound assessment using calculation and measurement procedures

Название (английский):

ISO 14509-3:2009

Small craft — Airborne sound emitted by powered recreational craft — Part 3: Sound assessment using calculation and measurement procedures

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 22 июля 2009 г.
Издание:: ISO IS 14509 edition 1 version 1
ICS:: 17.140.30

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

ISO 14509-3:2009 specifies the procedures for assessing sound emission of powered monohull recreational craft of length up to 24 m with a Froude number greater than 1,1. It is not applicable for personal watercraft (PWC). ISO 14509-3:2009 specifies the determination of the A-weighted sound pressure level by combining a calculation method and a measurement method.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 14509-3:2009 - Small craft - Airborne sound emitted by powered recreational craft - Part 3 - defines a hybrid calculation + measurement procedure for assessing airborne noise from powered monohull recreational craft (length up to 24 m) with a Froude number > 1.1. It is not applicable to personal watercraft (PWC). The method combines a hull‑form sound prediction with on‑board exhaust measurements to estimate the A‑weighted sound pressure level (25 m pass‑by equivalent) and was developed from the EU‑funded SoundBoat project.

Key topics and technical requirements

Scope: Monohull recreational craft up to 24 m, Fn > 1.1; excludes PWC.

Measurement target: Maximum A‑weighted sound pressure level (LpAmax) at 25 m (pass‑by equivalent).

Hybrid method:

Hull‑form sound (Annex A) - calculated from hull length and vessel speed using the standard formulae.
On‑board exhaust sound (Annex B) - measured at seven prescribed microphone positions; derive a logarithmic average (on‑board level LOB).
Combined using an energy sum (logarithmic addition), e.g.: LpAmax = 10·log10(10^(LHF/10) + 10^((LOB − T)/10)) where T is a propagation attenuation (16 dB for underwater exhaust; 22 dB for above‑water exhaust).

Accuracy: Predictive result is stated to be within ±2 dB of the ISO 14509‑1 pass‑by measurement (accounting for measurement uncertainties).

Instrumentation and procedures:

Sound level meter to IEC 61672‑1 Class 2; calibrator to IEC 60942 Class 1.
On‑board spectra: measure A‑weighted equivalent up to the 500 Hz third‑octave band over 10 s at each position; spectra should show clear exhaust harmonic orders.
Operating conditions: two‑person load (or one‑person craft), full throttle (limited to 70 km/h where applicable), level trim, correct propeller selection per ISO 8665.

Applications and who uses it

Boat manufacturers and designers for early noise assessment and design validation.

Acoustic test laboratories and accredited assessors who certify compliance with noise regulations.

Regulatory compliance: supports conformity assessment for the EU Directive 2003/44/EC (noise limits for recreational craft).

R&D and product development: provides a reproducible method when full pass‑by testing (ISO 14509‑1) is impractical due to location or weather constraints.

Related standards

ISO 14509‑1: Pass‑by measurement procedures

ISO 14509‑2: Assessment using reference craft

ISO 8665, ISO 8666, ISO 10087 (related small craft data and engine declarations)

IEC 61672‑1, IEC 60942 (measurement equipment standards)

ISO 14509‑3:2009 is practical for manufacturers and test labs seeking a validated, reproducible predictive method to estimate airborne sound emissions from powered recreational monohulls.

ISO 14509-3:2009

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

Технические детали

BS EN ISO 14509-1:2018

Small craft. Airborne sound emitted by powered recreational craft. Pass-by measurement procedures.

IEC 61672-1:2013

Electroacoustics - Sound level meters - Part 1: Specifications

IEC 60942:2017

Electroacoustics - Sound calibrators

ISO 8665:2006

Small craft — Marine propulsion reciprocating internal combustion engines — Power measurements and declaratio…

BS EN ISO 14509-2:2006

Small craft. Airborne sound emitted by powered recreational craft. Sound assessment using reference craft.

ISO 8666:2020

Small craft — Principal data

BS EN ISO 10087:2022+A1:2026

Small craft. Craft identification. Coding system.