Tanker ROB Survey - volume to mass with VCF

Compute Remaining On Board (ROB) mass from observed tank volume, density at 15 degrees, and cargo temperature. Applies the ASTM 54B-style volume correction factor (VCF) for petroleum cargoes.

TankerROB surveyASTM 54BISGOTT

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{Op} = \text{ROB survey}

Symbol	Meaning	Unit
$ROB survey$	Remaining On Board before discharge

Source: OCIMF ISGOTT 6th Ed

In short

Compute Remaining On Board mass from observed tank volume, density at 15 degrees, and cargo temperature. ASTM 54B-style VCF for crude, refined products, lubes.

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