Approval In Principle News

 

Petrobras Sandwich Hull Tank Design Receives ABS Approval

Nov 17, 2025

ABS issued an approval in principle (AIP) to Petrobras for its safety-enhancing “sandwich hull” design concept for floating production storage and offloading (FPSO) tanks.The design uses parts of longitudinal and transverse elements constructed with steel-concrete-steel sandwich structures that allow tanks to remain free of internal obstructions, promising to improve operational efficiency during tank…

AiP for Ammonia Floating Storage and Regasification Barge (A-FSRB)

Jan 05, 2023

ClassNK issued an Approval in Principle (AiP) for an ammonia floating storage and regasification barge (A-FSRB) jointly developed by NYK Line, Nihon Shipyard Co., Ltd. (NSY), and IHI Corporation (IHI), reportedly the world's first AiP for A-FSRBs handling ammonia as cargo…

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