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What are the advantages of slow steaming in ocean freight?

18-09-2025

Slow steaming, the deliberate lowering of the sailing speed of container ships, is increasingly used in global shipping. Where speed used to be the focus, the focus is now on sustainability, cost control and predictability. For buyers, planners and logistics managers, it is important to understand the benefits of slow steaming and its impact on supply chains.

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Context & challenge

Traditionally, container ships sailed at speeds of 20-25 knots. Since the 2008 financial crisis, slow steaming has become popular, reducing speeds to 16-18 knots, and in some cases even super slow steaming (12-14 knots).

Key drivers:

  • Fuel prices - bunker oil is one of the biggest costs in ocean freight.
  • Sustainability goals - reducing carbon and sulfur emissions.
  • Capacity management - more efficient use of vessels when volumes vary.
  • International regulations - stricter emission standards from IMO (International Maritime Organization).

How does it work?

  1. Adjustment of vessel speed - ships travel 20-40% slower than normal.
  2. More efficient fuel consumption - reducing bunker consumption by 30% or more.
  3. Planning & coordination - longer transit times are factored in in advance.
  4. Corridors & schedules - fixed shipping routes and reliable arrival times.
  5. Monitoring - shipping companies accurately track performance and emissions.
Sharing or summarizing with AI

Context & challenge

Traditionally, container ships sailed at speeds of 20-25 knots. Since the 2008 financial crisis, slow steaming has become popular, reducing speeds to 16-18 knots, and in some cases even super slow steaming (12-14 knots).

Key drivers:

  • Fuel prices - bunker oil is one of the biggest costs in ocean freight.
  • Sustainability goals - reducing carbon and sulfur emissions.
  • Capacity management - more efficient use of vessels when volumes vary.
  • International regulations - stricter emission standards from IMO (International Maritime Organization).

How does it work?

  1. Adjustment of vessel speed - ships travel 20-40% slower than normal.
  2. More efficient fuel consumption - reducing bunker consumption by 30% or more.
  3. Planning & coordination - longer transit times are factored in in advance.
  4. Corridors & schedules - fixed shipping routes and reliable arrival times.
  5. Monitoring - shipping companies accurately track performance and emissions.

When to choose this?

  • For non-time-critical shipments - longer transit times are not a problem.
  • When focusing on cost savings - lower fuel costs result in more favorable rates.
  • With sustainability goals - companies looking to reduce their carbon footprint.
  • In regular bulk flows - where predictability is more important than speed.

What are the benefits?

  • Lower costs - fuel consumption can drop up to 30%.
  • Sustainability - CO₂ emissions drop an average of 20-30% per container.
  • Reliability - ships are less prone to failure due to lower load.
  • Capacity management - more efficient use of vessels in transit.
  • Compliance - meets the more stringent IMO 2020 and upcoming emissions standards.
  • Image - contributing to green supply chains strengthens companies' sustainability profiles.

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Roadmap

  1. Supply chain analysis - determining if slow steaming is appropriate.
  2. Quote & comparison - insight into costs and transit times.
  3. Booking & documentation - complete handling through shipping lines.
  4. Transport & monitoring - real-time updates and digital KPI reports.
  5. Evaluation - reporting of cost and carbon savings.

Case study

A European consumer electronics importer switched to slow steaming from China. Although the transit time increased from 30 to 36 days, transport costs decreased by 15% and CO₂ emissions per container by 28%. By properly planning the longer lead times, delivery reliability remained at 99%.

Conclusion - key takeaways

  • Slow steaming significantly reduces fuel costs and carbon emissions.
  • It is especially suitable for non-time-critical cargo flows.
  • Companies benefit from reliability and compliance with IMO standards.
  • Neele-Vat supports with advice, monitoring and multimodal solutions.
  • Slow steaming contributes to a cost-efficient and sustainable supply chain.
What are the advantages of slow steaming in ocean freight?

Frequently asked questions

Deliberately reducing the sailing speed of container ships to save fuel and reduce emissions.

Depending on the route, on average 10-20% longer than normal speed.

No, it is especially suitable for non-time-critical cargo flows. For urgent shipments, air freight or multimodal transport is better.

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