Decarbonizing Shipping: The Case for Near-Term Solutions

Discussions at the International Maritime Organization (IMO) on decarbonizing shipping often overlook effective near-term solutions such as slow steaming, more efficient routing, and wind-assist retrofits. These solutions could significantly reduce emissions and improve sustainability in the shipping industry.

The IMO’s Carbon Intensity Indicator (CII), which measures the energy efficiency of ship operations, is a key tool that has received little attention. Strengthening the CII and incentivizing ship owners to improve operational efficiency could lead to tangible environmental benefits.

The upcoming meeting of the IMO’s Intersessional Working Group on Air Pollution and Energy Efficiency in April will focus on revising and enhancing the CII. By incorporating short-term solutions like wind-assist technologies, slow steaming, and more efficient routing, ships can reduce their carbon footprint and emissions of pollutants.

The Role of Wind-Assist Technologies

Wind-assist technologies, including rigid sails and rotor sails, offer significant fuel cost savings for shipping companies. While initial investments and operational concerns may deter some companies from adopting these technologies, the long-term benefits in terms of fuel savings and environmental impact make them a compelling option.

Studies have shown that wind-assist technologies can achieve fuel savings ranging from 5% to 30%, depending on factors such as wind conditions, routes, and vessel speed. The initial investment can be offset by fuel savings over three to seven years, making wind-assist a viable solution for meeting decarbonization goals.

Importance of Slow Steaming and Routing Efficiency

Slow steaming and efficient routing can also contribute to reducing fuel consumption and emissions in the shipping industry. While some companies may prioritize speed and flexibility, adopting these practices can lead to significant cost savings and environmental benefits.

By integrating wind-assist technologies, slow steaming, and routing efficiency, shipping companies can improve their operational efficiency and meet regulatory and market demands for sustainability. These strategies offer a multifaceted approach to decarbonizing the industry and reducing greenhouse gas emissions.

Conclusion

As the shipping industry works towards achieving the IMO’s emission reduction targets, implementing near-term solutions like wind-assist technologies, slow steaming, and routing efficiency is crucial. Strengthening the CII and incentivizing energy efficiency will play a key role in driving sustainable practices in maritime operations.

By embracing these solutions, shipping companies can not only reduce their environmental impact but also realize significant cost savings and operational efficiencies. The transition to a more sustainable shipping industry is within reach, with the right combination of technology, regulations, and industry collaboration.

About the Author:

Kay Brown is the Arctic Policy Director at Pacific Environment. With a background in political and non-profit sectors, Brown brings a wealth of experience to the discussion of sustainable shipping practices.