Single bottom

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Single Bottom

A single bottom vessel is one where the floors are predominately open through the bottom of the vessel (contrast to double bottom). Single bottom vessels are lighter and cheaper to manufacture than double-bottomed vessels, particularly when the vessel in question is modest in size (and where there are no longitudinal strength concerns). Smaller vessels also may not be able to provide sufficient headroom with a double-bottom (while retaining enough tank height for inspection and construction). Single-bottom hulls are also more susceptible to flooding than double-bottoms from bottom damage events such as grounding; though only within a range of puncture less than the tank top height.

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