Which statement best describes the VOC limits across anti-fouling and other marine paints?

• A. Anti-fouling paints have no VOC limit.
• B. Anti-fouling paints have a VOC limit of 340 g/L, while other marine paints have 400 g/L.
• C. Anti-fouling paints have a VOC limit of 100 g/L; other marine paints 500 g/L.
• D. Anti-fouling paints have a VOC limit of 400 g/L, while other marine paints have 340 g/L.

Answer: (D)

VOC limits differ by coating type because the formulation and use of each category affect how much solvent can sustainably be emitted. VOC stands for volatile organic compounds, and coatings release these solvents as they cure. Anti-fouling coatings, which contain biocides and require solvent-rich formulations to maintain performance on hulls, are allowed a higher VOC ceiling. Other marine paints, used more broadly and with tighter air-quality considerations, are limited to a lower ceiling. Therefore, anti-fouling coatings up to 400 g/L and other marine paints up to 340 g/L best describes how the limits are set. The other options conflict with this category-based approach, either by stating there is no limit, swapping the numbers, or giving implausible values.