MARPOL Annex II categorizes noxious liquid substances into four categories. Which category includes substances that pose a major hazard to the marine environment?

• Category A

• Category X

• Category Z

• Category Y

How does MARPOL Annex II categorize substances that present a hazard but can be discharged under strict conditions?

• Category A

• Category X

• Category Z

• Category Y

According to MARPOL Annex II, which of the following operational practices is essential to minimize the residues of noxious liquid substances before discharging ballast water?

• Cargo tank cleaning

• Regular inspections

• Crew training

• Emergency preparedness

What is the importance of segregated ballast as defined in MARPOL Annex II?

• It helps maintain the ship's stability.

• It is separated from cargo and oil to avoid contamination.

• It prevents accidental spills during cargo operations.

• It is used for de-ballasting in port areas.

What is the role of reception facilities promoted under MARPOL Annex II?

• To facilitate the safe storage of oil waste

• To allow ships to discharge garbage

• To provide proper disposal options for NLS residues

• To assist in unloading ballast water

According to Annex II, which of the following best describes high-viscosity substances?

• Substances with a viscosity greater than 50 mPa at unloading temperature

• Substances that are highly water-soluble

• Substances with a vapour pressure exceeding 0.28 MPa

• Substances with a low melting point

What is the purpose of categorizing noxious liquid substances under MARPOL Annex II?

• To regulate cargo loading practices

• To define operational conditions for discharging these substances

• To assess ship stability during transit

• To calculate port duties based on hazard level

How does MARPOL Annex II define "clean ballast"?

• Ballast water introduced into tanks reserved for fuel

• Ballast water that has been thoroughly cleaned and meets discharge requirements

• Ballast water mixed with NLS residues

• Ballast water that meets pollution category X requirements

Why is pre-washing of tanks carrying noxious liquid substances mandated under MARPOL Annex II?

• To prevent accidental cargo loss

• To ensure crew safety during tank cleaning

• To minimize the environmental impact of residues

• To prepare tanks for cargo operations

Which of the following substances would be classified under Category Z of MARPOL Annex II?

• Phenol

• Vegetable oils

• Phosphates

• Ethyl acetate