DNV Awards AiP to Hanwha Ocean for High-Pressure Type B LNG Fuel Tank Design for 16,000 TEU Containership

At Gastech 2025, DNV awarded an Approval in Principle (AiP) to Hanwha Ocean for its newly developed high-pressure Type B LNG fuel tank design for 16,000 TEU containerships.

The new design increases the maximum design vapor pressure of the Type B LNG fuel tank from the IGF Code limit of 0.7 bar to 1 bar. This enhancement significantly extends the vapor holding time of the fuel tank, making it well-suited for Hanwha Ocean’s standard 16,000 TEU containership. By extending vapor retention, the design also addresses the inherent limitation of Type B tanks compared to Type C, thereby improving overall fuel efficiency and operational flexibility.

Sang Don Kang, COO of Hanwha Ocean said: “This AiP is a meaningful step forward for Hanwha Ocean. By improving the pressure and vapor holding capacity of our LNG fuel tanks, we are not only enhancing performance but also contributing to more sustainable and cost-effective shipping solutions.”

Vidar Dolonen, DNV Regional Manager Korea & Japan added: “As LNG continues to play an important role in the energy transition, it is essential to keep advancing fuel tank technology to improve efficiency and reduce turnaround times. This AiP demonstrates the value of close collaboration between DNV and Hanwha Ocean, combining our technical expertise with their innovation to verify the feasibility of new solutions that can support the industry’s operational needs.”

An Approval in Principle (AiP) is an independent assessment of a concept within a defined framework of requirements. It confirms the feasibility of the design and verifies that no significant technical barriers exist to its implementation.