What does White indicate on the Flooding Effect Diagram?

• A. Not significant
• B. Stability increases
• C. Stability decreases
• D. Not used

Answer: (A)

On a Flooding Effect Diagram, colors show how flooding changes the ship’s stability. White means the flooding has no meaningful effect on stability—the change in stability is not significant enough to matter for the stability assessment. This often happens when the flooded space is small, located in a way that doesn’t shift the weight and moment much, or the ship already has ample stability margins, so the added water doesn’t alter the outcome in any practical way. It’s not indicating a gain or loss in stability, just that the impact is negligible. The other interpretations would be shown by other colors that reflect a noticeable decrease or increase in stability, or by labeling that the scenario isn’t considered at all.