What You Need to Know

The ballast water management system stabilizes those steel-hulled vessels at sea.
The water is pumped in to ensure that the vessel maintains safe operating conditions thought the voyage.
How does this benefit the vessel?


  • Reduces stress on the hull


  • Provides extended stability


  • Improves the pressure and maneuverability


  • Compensates for weight changes


It can pose a risk of affecting a multitude marine species.
While ballast water may be safe and efficient for vessels, it can create environmental, economic, and health problems to many species from the discharge of the ship’s ballast water. These species include:


  • bacteria


  • microbes


  • small invertebrates


  • eggs


  • cysts


  • larvae of various species


If they survive, they may become very meddlesome and multiply into pest proportions.

In 2004, IMO assembly adopted an International Conventional for the Control and Management of the Ship’s Ballast Water and Sediments.

This established standards and procedures so the ship can prevent the spread of the harmful species.
How did it make ballast water system better?


  • Each ship will keep a ballast water record book to manage the amount released


  • Most ships will need to install an on-board water treatment system.


  • All ships will require to implement a Ballast Water System and Sediments Management Plan.


  • The ships provide an eco-friendly amount of 95% volumetric exchange of ballast water.

These guidelines strengthened the functionality of the ballast water system, making it fit for worldwide usage. The shipowners were required to install expensive equipment for management and treatment and train personnel to use them.

According the IMO, more than 3-5 billion tons of seawater and 7 thousand water species are carried in the ship’s ballast water each year.

They developed PLASMA BWTS, which was made to prevent the movement and disinfect the marine life.
Here are the three steps the PLASMA BWTS take:


  • Filter


  • Plasma


  • UV Module


This should ultimately prevent, minimize, and mostly eliminate the transfer of the aquatic organisms.

The most important thing to have concern for when dealing with ballast water tanks is corrosion control.
In order to keep water ballast spaces from getting corrosion, the ships applied cathodic protection
How can cathodic protection help?

  • Reduce the costs of corrosion because it is estimated that $300 billion per year is spent on corrosion of metal.
  • The economy is less affected by the corrosion.
  • It can prolong the life of ballast water existing structures.


During the operation of the new Ballast Water Management System, the cathodic protection can provide effective protection against corrosion to help create a smooth outcome in protecting those marine species. It will provide 20 plus years of protection to the ballast water tanks and with the PLASMA BWTS, the ships can the marine environment safe.