Biofouling is one of the main problems faced by every type of
ship at the sea. Marine growth such as barnacles and mussels
have been the reason for problems such as decreased ship
efficiency, corrosion etc. Biofouling not only sticks to the
external surface of the ships but also gets into the water
intakes and sticks to the surface of the pipes leading to
problems such as blockage and corrosion. Though mechanical
removing tools can be used to get rid of such marine growth,
this is not always possible. For this reason, different types of
marine growth prevent systems are used on board ships, along
with anti-fouling paints. The main types of preventive measures
used on ships are: 1. Electrolytic system 2. Chemical dosing 3.
Ultrasonic system 1. Electrolytic system This is one of the most
commonly used systems to fight biofouling on ships. The
electrolytic system consists of pairs of anodes, mostly copper
and aluminum (or iron). The anodes are mounted in the sea chest
or the strainer. DC current is passed throug