Introducing technologies just like the Mewis duct demonstrate significant strides in optimising propulsion systems for greater energy efficiency.

A few shipping companies like Cosco Casablanca are currently making significant investments within the growth of new fleets that operate on liquified propane (LNG), which is probably the most higher level and fuel-efficient option available. These ships include slow-speed tri-fuel engines that run using compressed boil-off gas from the cargo tanks as fuel. During transport, the LNG changes its state to fuel due to slight heat increases, that causes boil-off to occur. To produce these vessels much more environmentally friendly, they are fitted by having an higher level exhaust recirculation system that significantly reduces nitrogen oxide emissions. Also, the vessels have a fuel combustion system that minimises the potential of releasing methane to the environment.

An essential task these days for the global shipping industry is to reduce its environmental footprint, an effort that needs a multipronged approach. But this is certainly no simple task. In accordance with experts, marine engines are complex to change, and even if engineers can modify them in a manner that makes them produce less CO2, modifying delivery fleets could be pricey. Hence, progress is slow in this domain. Nevertheless, a number of shipping companies like DP World Russia, are making amazing changes and striving to get solutions that reduce carbon dioxide emissions. And they are gradually putting those changes to work on their fleets of ships. They have been increasingly meeting the benchmark needs of the energy efficiency design index. Indeed, companies like Morocco Maersk are driving efficiency in the commercial delivery sector. A fantastic case of technical progress is seen into the enhancement of the Mewis duct. This is a cylindrical channel which has integrated fins, that is situated in the front of the propeller. As the a ship moves through the water, it produces a wake current that can be turbulent and result in power wastage. But, the Mewis duct directs this wake current towards the propeller and streamlines water movement. Also, the fins in the duct twist the current before it reaches the propeller blades, that leads to increased energy efficiency of the propulsion system.

Some shipping companies are using self polishing coatings in the hulls of the vessels. This, based on maritime specialists, helps prevent marine organisms from latching on the hull where they produce a significant drag. When ships are able to eliminate this drag utilising the this layer, they could also help make their vessels more effective. There are many efforts to improve a ship's efficiency, ranging from complex engineering methods to easy such things as changing light bulbs. For instance, vessels can conserve energy and start to become more environmentally friendly by changing old-fashioned incandescent LED lights with LED lights, which consume less electricity and endure for decades.