Chapter 17
Underwater Noise Study Toward
Propeller Rotation
Md Redzuan Zoolfakar and Mohammad Shafiq Mohammad Khairul
Abstract The public concern about the effect of underwater noise toward marine
life has been increasing for years where the main contributor of anthropogenic noise
is commercial shipping. This has a negative impact on the marine life where the
responsible body such as the International Maritime Organization (IMO) and others
have set a certain guideline for reducing underwater noise. This report will discuss
how the rotation of propellers affects the underwater noise. The primary objective
of this study is to analyse the effect of underwater noise generated from rotation
of propellers by using a suitable method to carry out the experiment. There are
several parameters used in this experiment such as the number of propeller blades,
the propellers size, the speed of the motor (rpm), the depth of the measuring device,
the horizontal and vertical position of the measuring device.
Keywords Decibels · Propeller rotation · Underwater noise · Cavitation · Propeller
17.1 Introduction
The marine life comprises animals, plants and other organisms that live within sea
water or brackish water of coastal estuaries. The initial vertebrates that live exclusively in water appeared in the form of fishes [1]. Basically, the marine life influences
the nature of the planet and yields oxygen and sequesters carbon. Shorelines are part
or portion formed and protected by marine life and even new land is created by some
other marine organisms. Marine terms come from Latin mare it means ocean or sea.
Marine habitats initially evolve most of the life forms and it is approximately about
90% of the living space in the world. There is a short summary and perception on
M. R. Zoolfakar (B) · M. S. M. Khairul
Marine and Electrical Engineering Technology, University Kuala Lumpur, Malaysian
Institute of Marine Engineering Technology, Lumut, Malaysia
e-mail: redzuan@unikl.edu.my
M. S. M. Khairul
e-mail: shafiqkhairul95@gmail.com
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2021
A. Ismail et al. (eds.), Advanced Engineering for Processes and Technologies II,
Advanced Structured Materials 147,
https://doi.org/10.1007/978-3-030-67307-9_17
177
Underwater Noise Study Toward
Propeller Rotation
Md Redzuan Zoolfakar and Mohammad Shafiq Mohammad Khairul
Abstract The public concern about the effect of underwater noise toward marine
life has been increasing for years where the main contributor of anthropogenic noise
is commercial shipping. This has a negative impact on the marine life where the
responsible body such as the International Maritime Organization (IMO) and others
have set a certain guideline for reducing underwater noise. This report will discuss
how the rotation of propellers affects the underwater noise. The primary objective
of this study is to analyse the effect of underwater noise generated from rotation
of propellers by using a suitable method to carry out the experiment. There are
several parameters used in this experiment such as the number of propeller blades,
the propellers size, the speed of the motor (rpm), the depth of the measuring device,
the horizontal and vertical position of the measuring device.
Keywords Decibels · Propeller rotation · Underwater noise · Cavitation · Propeller
17.1 Introduction
The marine life comprises animals, plants and other organisms that live within sea
water or brackish water of coastal estuaries. The initial vertebrates that live exclusively in water appeared in the form of fishes [1]. Basically, the marine life influences
the nature of the planet and yields oxygen and sequesters carbon. Shorelines are part
or portion formed and protected by marine life and even new land is created by some
other marine organisms. Marine terms come from Latin mare it means ocean or sea.
Marine habitats initially evolve most of the life forms and it is approximately about
90% of the living space in the world. There is a short summary and perception on
M. R. Zoolfakar (B) · M. S. M. Khairul
Marine and Electrical Engineering Technology, University Kuala Lumpur, Malaysian
Institute of Marine Engineering Technology, Lumut, Malaysia
e-mail: redzuan@unikl.edu.my
M. S. M. Khairul
e-mail: shafiqkhairul95@gmail.com
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2021
A. Ismail et al. (eds.), Advanced Engineering for Processes and Technologies II,
Advanced Structured Materials 147,
https://doi.org/10.1007/978-3-030-67307-9_17
177