Class 1 (Chief Engineer) Engineering Management 📅 Dec 2022

Exam Question

(a) Referring to the latest IMO "Code on noise level onboard ships". Define and explain the following terms

(a) A-weighted equivalent sound level

(b) C-weighted equivalent sound level

(d) Weighted sound reduction index

Reference Answer

### Introduction
The IMO "Code on Noise Levels on Board Ships" (Resolution MSC.337(91)) establishes mandatory maximum noise levels and standards for noise protection on new ships. Its purpose is to provide a safe and comfortable working and living environment for seafarers by limiting exposure to hazardous noise. The following terms are fundamental to the measurement, assessment, and control of noise as per the code.
### (a) A-weighted equivalent sound level (L_Aeq,T)
**Definition:**

Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.

View plans Browse library

← Browse more questions

Prepare on Android — MeoMock on Google Play