Because shipping is such an important point in our global economy. Maritime transport drives global trade overseas, with more than 10 billion tons of containerized cargo being transported across the world's waters each year.
More than 90% of the world's trade takes place overseas. Nearly 50,000 merchant ships sail the world's oceans, transporting everything from food, fuel, building materials, raw chemicals and household goods.
Shipping is responsible for 2.5% of global greenhouse gases (GHGs), but without further action, shipping emissions are projected to grow by 50-250% by 2050. Shipping containers produce more greenhouse gas emissions than any small country. It's hard to imagine how much carbon dioxide the ship would emit. Because ships travel so far at sea. Not only carbon dioxide, but ships also release nitrous oxide (NOx) and sulfur oxides (SOx), highly toxic chemicals that have been shown to cause acid rain.
Not only gas emissions, container ships also create another kind of pollution, such as ballast water, biocides, waste, and sometimes outright oil spills, which are very difficult to clean. Pollutants have catastrophic effects on the oceans: Pollution kills more than 1 million seabirds and marine mammals each year because they cannot survive in toxic waters, while coastal states that rely on seagrass meadows, mudflats and wetlands die when aquatic vegetation dies Critical resources are being lost. In this article, we will learn about the main steps to reduce ocean pollution.
Steps to reduce ocean pollution:
Install the overflow pipe in the tank
During bunkering, if more than capacity is supplied to the vessel's fuel tanks, the fuel may flow out of the vessel through the tank vents. To prevent this from happening, install an overflow pipe in the vessel's fuel tank. The overflow tank allows the fuel overflowing from the fuel tank to flow into the overflow tank, and a flow detection sensor is set in the pipeline or a high-level alarm sensor is set in the fuel tank to detect the overflow immediately.
Use an air seal on the stern tube
The stern tube of the ship is air-sealed so that compressed air is continuously fed into the space where the propeller shaft penetrates from the inside to the outside of the ship. This creates a sealed area within the stern tube for separation of lubricating oil and seawater.
Use electric deck equipment
Ships using electric deck equipment such as mooring winches (*1) and gangways (*2) that were previously hydraulic power equipment. This reduces the risk of leakage of hydraulic oil for hydraulic drives.
1. Mooring winch: A device used to wind a rope or wire rope to moor a vessel.
2. Ramp: A ramp that extends to the dock when the car is loaded onto the car carrier and docked. It is stored during the voyage.
Indirect cooling system or central cooling system
It is a device that cools the engine and lubricating oil by indirect heat exchange between dedicated fresh water and sea water. Using this system prevents oil leaks or spills due to cooling system failures, as there is no direct heat exchange between the oil and seawater in this system.
Eco-friendly paint.
When marine life attaches to the hull, the hull resistance increases and the fuel consumption increases. This leads to an increase in carbon dioxide emissions. When these attached marine organisms are carried into other seas during the voyage, it will affect the marine ecosystem. New ships are encouraged to use low-friction coatings to reduce fuel consumption and prevent the attachment of marine life, and efforts are also being made to reduce carbon dioxide emissions and preserve biodiversity.
Environmentally friendly fuel
Standard for zero-emission berths in ports. Ships can use waterfront electricity while in port, virtually eliminating ship-sourced SOx, NOx, PM and CO2. Alternatively, ships can use alternative fuels such as hydrogen or ammonia.
Ballast water
Ballast water is critical to the safe operation of ships. Used to adjust the overall weight of the vessel and its internal distribution to keep the vessel safe, upright and stable afloat. It is used to compensate for different cargo loads that the vessel may be carrying at different times, including during loading and unloading. It also provides stability and maneuverability during transport.
