What is the maximum fill level of the fuel storage tanks during replenishment at sea?

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The maximum fill level of fuel storage tanks during replenishment at sea is set at 95%. This restriction is in place primarily for safety and operational reasons. Keeping the tanks filled to a maximum of 95% allows for any thermal expansion of the fuel that may occur due to temperature changes, preventing spills and maintaining proper operational integrity. It also assists in accommodating any possible movements of the vessel and fuel during rough sea conditions, which could lead to fuel sloshing that might otherwise compromise safety if the tanks were filled to capacity. This guideline is established to enhance safety protocols and ensure effective management of fuel resources during maritime operations.