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This collaborative planning effort included shipboard visits, risk assessments, technical workshops and repeated sessions with Carnival’s technical teams in Miami, Southampton, Marseille and at the Carnival training centre. The aim was to build a shared and granular understanding of system conditions, survey requirements, and the operational profile of each vessel. 

Vincenzo Prinzi, Technical Operation Director, CCL, reflects: “The preparation for this project was extensive, and it allowed us to engage in meaningful discussions and work together with determination. Our strong communication played a key role in reaching a consensus on everything we planned.”

John Waters, LNG Inspection Project Manager, CUK, says: “The recent inspection of the LNG fuel system on Iona marked a first for Carnival UK and the collaboration with LR was important in its success. The communication and constructive approach helped navigate this new ground with confidence. Working closely together allowed us to address challenges quickly, maintain high safety standards and strengthen our capabilities in this emerging area.”

The inherent complexity of LNG fuel systems shaped every decision. Both Iona and Mardi Gras feature three fuel tanks and dual fuel trains designed for full redundancy, supported by sophisticated control logic and an extensive cryogenic piping network.  

“Managing the inspection, testing and recommissioning of these systems within the confines of a passenger ship’s operational profile required not only expert knowledge but tight integration between the shipboard team, the technical office and the attending class surveyors,” says van Ee.  

“We had to define a very detailed Inspection and Test Plan for these vessels, down to the smallest valve which required overhaul well in advance of the actual surveys.”