What is ballast water management requirements?

What is ballast water management requirements?

There are two ballast water management standards (D-1 and D-2). The D-1 standard requires ships to exchange their ballast water in open seas, away from coastal areas. Ideally, this means at least 200 nautical miles from land and in water at least 200 metres deep.

What is the purpose of ballast water management?

The purpose of the Ballast Water Management System is to minimize the transfer of Non-indigenous harmful aquatic organisms and pathogens from one area to another (arrival port) through the ship’s ballast water system. Invasive marine species are one of the four greatest threats to the world’s oceans.

What is D2 in ballast water management?

Regulation D-2 Ballast Water Performance Standard – Ships conducting ballast water management shall discharge less than 10 viable organisms per cubic metre greater than or equal to 50 micrometres in minimum dimension and less than 10 viable organisms per milliliter less than 50 micrometres in minimum dimension and …

What is ballasting and deballasting?

Ballasting or de-ballasting is a process by which sea water is taken in and out of the ship when the ship is at the port or at the sea. Ballast tanks are constructed in ships with piping system and high capacity ballast pumps to carry out the operation.

What is the importance of ballast?

The major purposes of ballasting a vessel for a voyage are to increase its manageability (and safety), particularly under heavy weather conditions; control its draft and trim for maximum efficiency; and control its stability to ensure safe passage.

What is the impact of ballast water?

When ballast water is loaded many microscopic organisms and sediments are introduced into the ships ballast tanks. Many of these organisms are able to survive in these tanks. Ballast water impacts the environment when the ballast water is discharged and the organisms are released into new environments.

What is ballast exchange?

Ballast Water Exchange (BWE) is a process involving the replacement of water in a ballast tank using either the sequential, flow-through, dilution or other exchange methodologies recommended or required by IMO.

What is TRO value?

TRO (Total Residual Oxidant) is a generic term for these kinds of oxidants. Most of management systems control the treatment and discharge concentrations of them with TRO value, measure TRO value in real time, and based on it, control electric power.

What is bilge in ship?

The bilge /bɪldʒ/ of a ship or boat is the part of the hull that would rest on the ground if the vessel were unsupported by water. The “turn of the bilge” is the transition from the bottom of a hull to the sides of a hull.

Why is ballast water in discussion?

Ballast water reduces stresses on the vessel’s hull, balances off for the weight loss due to consumption of water and fuel, provides better manoeuvrability with sufficient vessel draft, including ship propeller immersion, and also helps in improving living conditions of the crew aboard by reducing vibrations and …