Proactive Hull Management with Biocide-Free Hard Foul-Release Coatings: Lessons from an LPG Carrier after One Year in Operation
This paper presents a one-year operational case of Proactive Hull Management (PHM). The case focuses on an LPG carrier using a biocide-free hard foul-release coating with onboard robotic grooming. A ship-specific plan was developed through biofouling-risk modelling and port-feasibility assessment. Over twelve months, hull condition and performance were monitored via inspection footage and speed-power analysis. Despite delayed or partial cleanings, the hull remained free of hard fouling and the power trend stayed relatively stable: 6% fuel savings out of dock, <2% added power over the year, and 3-5% fuel savings regained after each grooming event. The study highlights operational learnings related to crew involvement, port practices and the importance of advisory support, and outlines the framework that enabled successful implementation. Findings indicate that PHM, when supported by the right coating, grooming technology and advisory model, offers a scalable, sustainable pathway to meet emerging biofouling management requirements.