A tank vessel transferring non-flammable hazardous cargo in bulk must display warning signs. These signs must __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — use black lettering on a white background
Per 33 CFR 155.715 and 46 CFR regulations, warning signs displayed during hazardous material transfers must feature bold black lettering on a bright white background to ensure maximum legibility and safety compliance.
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