WHY SHIPS CARRY BALLAST WATER ON BOARD?
The purpose of ballast water on commercial ships, and how it affects the marine environment.
Ballast water is essential for a ship’s safety. It is crucial that the ship is stable when loading and unloading. Potentially invasive species can be released into a completely new marine ecosystem if it is discharged. Consequently, marine life is thrown out of balance, which is extremely harmful to the environment. By managing and treating the water correctly, this risk can be significantly reduced.
A ship would pop up like a cork and become unstable, to avoid this risk, it is used as an extra weight added to a ship when it unloads its cargo.
The risk of capsizing could be high while solid ballast could shift in heavy seas if not properly secured. With the introduction of steel-hulled ships and automatic pumping technologies in the 20th century, the water became a safer alternate material for ships.
The necessary weight is added to the ship by pumping water into the tanks from the sea or inland waters where the ship is located. The ship releases the water when the weight of the ship needs to be lightened.
While the ships are at berth, the ballast water can be disposed of on land. But this is costly, requires high-end equipment and a complex process follows. Hence, not practiced by everyone.
The type, size, and construction of the vessel in accordance with its design, tanks can become an integral part. A vessel is likely to have a wide range of capabilities and capacity. Usually, the tank equates to 25% to 30% of the weight the ship can carry. Get in touch with experienced marine engineers at Maritronics to know more.
Why is Ballast Water Important?
Ships cannot operate safely without ballast water. The purpose of it is to maintain a stable weight of the ship to avoid the risks. It provides stability and maneuverability during a ship’s voyage. Also, it is used to balance the weight of the ship during the loading and unloading of the cargo.
Bunkering- is the process in which the ship’s bunker tanks (fuel tanks) are filled before a voyage.
Ballasting- is the process of pumping water in and out of its tanks while in transit or at the port.
Why should we Treat Ballast Water?
Untreated water can pose a major threat to the environment, public health, and economy. It’s quite frightening to see invasive aquatic species spreading from one part of the world’s oceans to another. If an invasive species is introduced to a new area, it can be difficult to control and impossible to eradicate, causing irreparable harm to the ecosystem.
The sediment and microscopic organisms also get transferred when water is pumped into the ballast tanks. Bacteria, microbes, small invertebrates, cysts, eggs and larvae of various species are some of the organisms. At the time of discharge, these organisms are released into the local marine environment.
There is a risk that the foreign species will not only survive but can flourish becoming a threat to the ecosystem. Native species are threatened by invasive species because they compete for resources with their local counterparts. Also, Invasive species can threaten the Indigenous way of living as Indigenous Peoples share a deep connection with nature, its biodiversity, wildlife, and waters.
When invasive species disrupt the availability of native fish and shellfish, they threaten the viability of local food sources and fisheries, which causes a significant impact on these communities.
What is a Ballast Water Management Plan?
The Ballast water treatment and management plan is an operational tool that ship operators must develop, implement, and maintain to satisfy the Ballast Water Management Convention’s requirements.
The plan addresses the following:
Determine the duties of the crew in caring out operations?
How to conduct operations?
Where are locations for water exchange?
What rules apply to different port state controls?
Where can sediments and water be discharged?
The plan also requires record-keeping – a ballast water exchange record book – in which information such as the date and the amount of water exchanged, the salinity and the temperature.
What are Ballast Water Management Systems?
Ballast Water Management Systems are placed in a vessel in order to eliminate the organisms that can be found in the ship’s ballast water. Depending on the type of ship, the space available on board, and the cost, these systems use or combine different technologies – filters, chemicals, light, ultrasound, heat, electricity, and magnetic fields. It generally undergoes two processes, firstly remove the solid particles and only then the water undergoes the treatment processes to destroy potentially harmful marine organisms in the water or sediments.
Managing invasive species – and building the capacity to do so within the communities – is an important pillar of the treatment.
Hence, it is important to follow the regulations and sustain marine ecology as it is. Treatment of water from vessels is one major risk to put an end to. Rely upon the best ballast water management and treatment solutions from us.