Platts Will Expand Standard LNG Vessel Size Range
The adjustment for Asia-Pacific assessments requires traders to update their operational vessel specifications.
Updated on Sept. 22, 2026 in Oil and Gas
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Beginning October 16, 2026, Platts will increase its standard vessel size range for key Asia-Pacific LNG price assessments to 135,000 to 180,000 cubic meters. This change affects the JKM, WIM, SEAM, and MEM benchmarks used by market participants.
Why it matters
The change aligns pricing benchmarks with the increasing usage of larger carriers in the global LNG fleet. For operators, this update ensures that assessment data better reflects current logistics practices, potentially shifting shipping requirements for cargo deals.
Two-thirds of all offers recorded in the Platts Asia-Pacific assessment process from January to June 2026 already utilized the new 135,000 to 180,000 cubic meter range. This shift replaces the prior benchmark of 135,000 to 175,000 cubic meters.
The players
Platts
A provider of energy and commodities information that maintains standardized price assessments used by global markets.
The details
The update applies to the JKM, WIM, SEAM, and MEM LNG cargo assessments to account for the industry's move toward larger ship sizes. Under the new standard, market participants are expected to accept vessels falling within the 135,000 to 180,000 cubic meter window if the vessel is operationally suitable for the delivery. This change formally codifies the dominant fleet size observed in trading activity over the first half of 2026.
Timeline
Assessment data recording the 135,000-180,000 cubic meter usage occurred from January through June 2026.
The new standard vessel size range becomes effective October 16, 2026.
Market Landscape
The update follows the trend in ship capacity utilization established by the 2026 Asia-Pacific LNG cargo assessment reporting data. It marks a formal pivot in price benchmarking to reflect the growing deployment of larger LNG carriers in global supply chains.
Operators should review their current logistics contracts and vessel charters to ensure compliance with the new assessment standards by October 16. Those failing to match the updated size range in cargo offers may find their shipments excluded from benchmark price discovery processes.
The takeaway
The industry is adapting to larger, more efficient vessels, and pricing benchmarks are following suit to remain accurate. Traders should update their vessel eligibility criteria for JKM, WIM, SEAM, and MEM contracts to reflect the 180,000 cubic meter ceiling.
Further reading
For more on industry benchmarks, visit the Oil and Gas section.
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