By far the largest number of vessels worldwide are fueled by conventional fuels. As of June 2025, there were * ships that relied on fuel oil and other conventional petroleum-based fuels. By comparison, there were ** vessels powered by methanol in operation, compared with *** vessels on order as of that time. Methanol and e-methanol are among the most promising alternative fuels for the maritime sector. In general, alternative fuels account for ** percent of all ships on order.
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ClassNK. (July 30, 2025). Number of commercial cargo vessels worldwide as of June 2025, by fuel type and status [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 29, 2026, from /statistics/1620973/global-number-of-vessels-by-fuel-type/
ClassNK. "Number of commercial cargo vessels worldwide as of June 2025, by fuel type and status." Chart. July 30, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 29, 2026. /statistics/1620973/global-number-of-vessels-by-fuel-type/
ClassNK. (2025). Number of commercial cargo vessels worldwide as of June 2025, by fuel type and status. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 29, 2026. /statistics/1620973/global-number-of-vessels-by-fuel-type/
ClassNK. "Number of Commercial Cargo Vessels Worldwide as of June 2025, by Fuel Type and Status." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 30 Jul 2025, /statistics/1620973/global-number-of-vessels-by-fuel-type/
ClassNK, Number of commercial cargo vessels worldwide as of June 2025, by fuel type and status ÌÇÐÄÆƽâ°æ, /statistics/1620973/global-number-of-vessels-by-fuel-type/ (last visited July 29, 2026)
Number of commercial cargo vessels worldwide as of June 2025, by fuel type and status [Graph], ClassNK, July 30, 2025. [Online]. Available: /statistics/1620973/global-number-of-vessels-by-fuel-type/
