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GB/T 9911-2026Measurement of airborne noise emitted by marine diesel engine (English PDF)

船用柴油机辐射的空气噪声测量方法

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Also coversGB/T9911-2026 + GBT9911-2026

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 28, 2026

Implementation date

April 1, 2027

Scope

GB/T 9911-2026 is the English-translated version of 船用柴油机辐射的空气噪声测量方法.

The measurement of airborne noise emitted by marine diesel engines is the subject of this standard. Noise from ship engines affects crew comfort, compliance with shipboard noise limits, and the design of engine rooms, so a consistent measurement method is important to anyone who needs comparable figures.

Marine engine manufacturers, shipbuilders, classification and inspection bodies, acoustic test laboratories, and ship owners are the typical users. It is a recommended national standard (GB/T), meaning it is voluntary unless a contract or rule requires it. The 2026 edition replaces GB/T 9911-2018. It was issued on 28 September 2026 and takes effect on 1 April 2027. A measurement method of this type is mainly used to ensure that results reported by different laboratories or manufacturers rest on the same basis, which is relevant for engine acceptance trials and for documentation supplied to shipyards and buyers.

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Document preview — GB/T 9911-2026

National Standard of the People's Republic of China

ICS: 47.020.20
Classification: U44
Replacing: GB/T 9911-2018

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

GB/T 9911-2026 is a recommended national standard (GB/T) of the People's Republic of China, issued on 28 September 2026 by the State Administration for Market Regulation and the Standardization Administration of China, with effect from 1 April 2027.

This edition replaces GB/T 9911-2018.

It is under the responsibility of the Standardization Administration of China.

Classification: ICS 47.020.20; CCS U44.

1 Scope

Remaining clauses in the full document

2 Normative references
3 Terms and definitions

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

Editions of GB/T 9911

Edition	Title	Revision	Status
GB/T 9911-2026	Measurement of airborne noise emitted by marine diesel engine	current edition	Current
GB/T 9911-2018	Measurement of airborne noise emitted by marine diesel engine	previous edition	In force until 1 April 2027

This page sells the current edition, GB/T 9911-2026. Earlier editions are listed for reference only.

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