JSI Alliance delivers safe and efficient heavy-lift installation for Dahej berth expansion
Calling upon the expertise of a wide range of internal disciplines, the JSI Alliance developed a solution fully aligned with the project's requirements. The Alliance mobilised the heavy-lift vessel (HLV) Jumbo Javelin. The heavy-lift vessel enabled the safe and efficient execution of the project by providing a single platform for the transport and installation of prefabricated structures. Mobilisation commenced on 3 November and took place over a period of fifteen days. During this time, the JSI Alliance equipped the Jumbo Javelin with a fly jib that enabled her to perform the required lifting scope.
The vessel was also outfitted with an eight-point mooring spread tailored to the seabed and tidal conditions at the project location. Creating sufficient holding force in such a restricted area required the utilisation of 17 t anchors and 64 mm and 52 mm mooring lines, each with a Minimum Breaking Load of approximately 300 t. The Jumbo Javelin was equipped with custom-made 250 t winches. It was determined that eight, rather than four, winches should be installed to provide backup wires, ensuring safety and redundancy.
To absorb the significant forces involved, it was necessary to strengthen the vessel with additional steel. Installation of the mooring spread required anchor-handling support vessels with sufficient capacity for the heavy-duty components employed. These vessels were required to perform the mooring installation during a four-hour tidal window, when the current was at its lowest speed. Once connected to the mooring spread, the Jumbo Javelin remained in position for several days at a time, thereby avoiding interruption to berthing operations.
The first loadout commenced on 3 December at Dighi Port. In total, the Jumbo Javelin made six voyages. The last item was installed on 14 March, before the vessel departed for Dighi Port for demobilisation, which took just seven and a half days. Following this, the Jumbo Javelin sailed to Singapore to return equipment to suppliers. Discharge was completed in two days and, on 6 April, the project was fully completed.
Robert de Waard, Project Manager at the JSI Alliance, said, "The successful completion of this project is a testament to the teamwork, expertise and commitment of everyone involved. By drawing on the shared resources and capabilities of the JSI Alliance, we were able to develop a solution tailored to the complex site conditions and deliver the project safely and efficiently. "I would like to thank everyone involved for their efforts, including my colleagues from all departments, as well as our suppliers, including Franklin Offshore International and Mooreast Asia, for their support with the anchor-handling equipment. I would also like to extend my appreciation to Seacontractors, which supported Afcons by providing two vessels for anchor handling and contributed to the successful execution of the project. "Of course, we are also extremely grateful to Afcons for placing its trust in the JSI Alliance. Our two teams worked closely together throughout the project, with Afcons actively involved in, and providing expert guidance on, all aspects of the work. We have enjoyed the collaboration and look forward to working together again in the future."
Published on:
30 June 2026
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