BV: Chinese shipbuilder Hudong-Zhonghua has commenced construction on the world’s first batch of 271,000 cbm ultra-large LNG carriers, built under Bureau Veritas classification as part of QatarEnergy’s record-breaking fleet expansion. Offering a 57% capacity increase over conventional vessels alongside an ultra-low 0.087% daily boil-off rate, these record-valued mega-ships introduce a new scale of transport efficiency and resilience to the international clean energy supply chain.
Shanghai, China | June 17, 2026 – The global LNG transport sector entered a new era on June 9, 2026, as Chinese shipbuilding giant Hudong-Zhonghua Shipbuilding (Group) Co., Ltd. officially commenced construction on the world’s first batch of ultra-large 271,000 cbm LNG carrier.
The steel-cutting ceremony marks a monumentally significant technical milestone for China’s state-backed shipbuilding sector and a massive scaling event for the international clean energy supply chain. Leading international classification society Bureau Veritas Marine & Offshore (BV) has joined the high-profile program to provide complete classification and comprehensive technical support, with six of these next-generation mega-vessels earmarked for BV class.
The Q-Max Redefined: Breaking Global Records
Often heralded as the “crown jewel” of maritime manufacturing due to the extreme thermodynamic and engineering complexities involved, these vessels represent a 57% increase in cargo capacity over mainstream 174,000 cbm conventional LNG carriers.
The mega-ships are part of a broader historic 36-ship order secured by Hudong-Zhonghua under QatarEnergy’s massive fleet expansion program. The multi-billion-dollar deal for the 24 ultra-large 271,000 cbm vessels alone shattered global maritime records for the highest total value of a single shipbuilding contract.
Primary Architectural Dimensions:
- Length Overall (LOA): 344 meters
- Beam (Width): 53.6 meters
- Design Draft: 12 meters
- Cargo Containment: Latest-generation NO96 Super+ membrane containment system developed by GTT.
Advanced Thermodynamics and Deep-Sea Efficiency
To minimize cargo degradation over long-haul international trade routes, the vessels are packed with high-end efficiency technologies designed to slash greenhouse gas indicators.
| Vessel Classification | Cargo Capacity (cbm) | Capacity Increase | Key Efficiency Indicator |
| Conventional Vessel | 174,000 cbm | Baseline | Standard boil-off rates |
| Next-Gen Mega-Carrier | 271,000 cbm | +57% | Daily Boil-Off Rate (BOR) tightly capped at 0.087% |
The incorporation of the NO96 Super+ membrane insulation keeps the daily cargo boil-off rate (BOR) capped tightly at 0.087%, a threshold that dramatically minimizes product loss during deep-sea transport.
Propelled by high-efficiency dual-fuel internal combustion engines paired with an advanced air lubrication system and a highly refined, low-resistance hull form, the design vastly optimizes energy consumption per unit of transport capacity. The ships achieve full compliance with the International Maritime Organization’s (IMO) Tier III environmental standards.
Despite their unprecedented footprint, the vessels boast broad port compatibility, engineered to safely berth and discharge at more than 70 major LNG terminals globally.
Strategic Class & Industrial Synergy
For Bureau Veritas, the classification contract serves as a reinforcement of its long-standing collaboration with Hudong-Zhonghua on complex dual-fuel ultra-large container ships and gas-bunkering assets. BV has mobilized dedicated project taskforces to ensure the series meets rigorous quality assessments and deliveries on schedule.
“The project further demonstrates Bureau Veritas’ commitment to supporting the development of advanced LNG transportation solutions and facilitating the maritime industry’s energy transition,” stated Jeffrey Guo, Senior Vice-President of Marine & Offshore Asia Pacific at Bureau Veritas. “By helping to deliver safe, efficient, and environmentally responsible vessels, BV continues to contribute to the development of global clean-energy shipping.”
With an active order book extending well past 2030, Hudong-Zhonghua’s ability to leverage an entirely domesticated upstream supply chain positions the yard to challenge traditional South Korean dominance in the high-value gas carrier segment, fundamentally reordering global shipbuilding dynamics.
About Bureau Veritas
Bureau Veritas (BV), founded in 1828, is a world leader in inspection, certification, and laboratory testing services with a powerful purpose: to shape a world of trust by ensuring responsible progress. With a vision to be the preferred partner for customers’ excellence and sustainability, the company innovates to help them navigate change. With over 84,000 employees in 140 countries, BV brings unparalleled expertise in sustainability, safety, and technological advancement.
Source: Bureau Veritas