Background
Briety Shipping, a Marshall Islands company, owned the TENERGY, an LNG carrier built by Hyundai Heavy Industries. In July 2020, Briety entered a five-year time charterparty with Trafigura Maritime Logistics, a Singapore-based commodities trader, for hire of the vessel. The charterparty was signed on 21 July 2020, and the vessel was delivered in January 2022. Clause 10 of the charterparty established a floating hire rate based on a complex formula referencing two LNG price benchmarks: JKM (the Japan-Korea Marker, a spot price for LNG in Far Eastern markets) and TTF (the Title Transfer Facility, a spot price for European LNG markets).
The hire calculation provided a daily floor of US$50,000, with rates increasing when the JKM-TTF spread exceeded US$1.3/MMBtu (Million British Thermal Units), up to a ceiling of US$145,000 per day. From January 2022 through early 2023, TTF prices unusually exceeded JKM prices, reversing the historical pattern. Briety claimed Trafigura underpaid hire by approximately US$1.7 million by treating this price reversal as triggering only the floor rate, while Briety argued increased rates should have applied. The parties’ dispute centered on whether negative mathematical results from subtracting TTF from JKM should be treated as absolute values for purposes of the US$1.3 trigger.
The Court’s Holding
Mr Justice Waksman conducted an exhaustive analysis of Clause 10, examining both its express language and the commercial context. Clause 10 explicitly required calculating the “difference” between JKM and TTF by “deducting” TTF from JKM on a daily basis, then averaging those daily spreads over each calendar month. The court examined competing interpretations: Briety argued the spread should always be treated as an absolute value regardless of algebraic sign, while Trafigura contended that a mathematically negative result simply cannot satisfy a threshold requirement of US$1.3 or more.
The court considered substantial factual evidence regarding “the Arb”—the well-known arbitrage mechanism in LNG markets whereby traders profit by shifting cargoes between Asian and European markets based on price differentials, with effects on spot freight rates. The judgment analyzed the parties’ knowledge of this mechanism at the time of contracting, the negotiations leading to the formula’s adoption, and the industry understanding of how such index-linked pricing typically operates. The court examined expert evidence from experienced LNG shipping professionals and traders regarding market practice and the reasonable interpretation parties would have held regarding the formula’s operation.
Key Takeaways
- Hire calculation formulas in shipping charterparties depend on precise interpretation of mathematical expressions embedded in contractual language.
- Ambiguities in index-linked pricing can create substantial liability when market conditions diverge from historical norms (as when TTF exceeded JKM).
- Commercial context and industry knowledge regarding market mechanisms inform the proper construction of complex contractual formulas.
- Parties to LNG charterparties must carefully consider what happens when the assumed relationship between benchmark prices reverses.
Why It Matters
This decision has significant implications for the shipping industry and commodity traders who use index-linked charterparties. LNG transportation involves substantial capital investment and multi-million-dollar hire obligations; disputes over hire calculation can turn on subtle questions of contractual interpretation. The case demonstrates that even carefully drafted commercial formulas can produce ambiguity when underlying market conditions diverge from historical patterns. Courts must balance the express language of contractual formulas against the commercial purpose parties intended them to serve, requiring close attention to both technical precision and market realities.
For shipowners, charterers, and brokers, the decision underscores the importance of explicit agreement on how mathematical formulas should operate under all potential market scenarios, not merely the scenarios parties anticipated at signing. The judgment also illustrates the critical role of detailed discovery and expert evidence in resolving disputes over technical commercial mechanisms, particularly when industry practice and reasonable party expectations are relevant to interpretation.