This paper presents insight into the structure of TFfuel, the Transport Factor component related to the weight of fuel needed to meet a ship's endurance requirement. TFfuel is shown to be dependent on the required range and the specific fuel consumption rate of the machinery while being independent of installed power and speed. The effect of operating ships at less than full-load displacement to increase fuel efficiency is illustrated. The results are compatible with Transport Factor analyses that assess transport properties of ship types of interest for high-speed sealift such as displacement and semi-displacement monohulls and multihulls.

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