Boating Coach US
Pollution and the environmentQuestion 350 of 352

What does the oil discharge placard warn about?

  1. Oil that makes a film, discoloration, sludge or emulsion on the water
  2. Only large oil spills
  3. Only oil from tankers
  4. Only oil spilled in the open ocean
Show answer

Correct answer: Oil that makes a film, discoloration, sludge or emulsion on the water

Any oil discharge that leaves a sheen or sludge is banned and carries penalties.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 155: Oil or Hazardous Material Pollution Prevention Regulations for Vessels, § 155.450 Placard

All questionsPractice the topic "Pollution and the environment"

Questions last reviewed: 18 October 2026