Oil contamination of ballast before discharge
Applicability: Ballast tanks with adjacent fuel tanks, traversing bunker lines or potential hydraulic-oil contamination.
What is being checked
At-risk ballast is checked for oil contamination before discharge.
Ready on board
0 / 3 checkedCheck the vessel’s actual procedures, equipment and records against these points from RISQ 3.2.
Practice questions
Preparation prompts derived from this entry, not an official inspector interview script.
1Does normal ballast-system operation prove the water is uncontaminated?
No. A shared-boundary or bunker-line leak can contaminate it; the source calls for checks before discharge.
2What is the stated response to an oil sheen?
Do not discharge that ballast water.
Where a finding may arise
Missing evidence, defects or operation inconsistent with the arrangements described above may prevent a satisfactory answer. These are preparation concerns derived from the question, not reported past observations.
Past observations for practice
Anonymised reports, manually reviewed before publication. These are reported experiences, not additional inspection requirements.
No reviewed observations have been added for this entry.
Share an observation for private review
Remove vessel, company and inspector names, report numbers, exact dates and confidential information. Do not paste a complete inspection report.
References and source status
RightShip Inspection Ship Questionnaire, November 2025, version 3.2. Section 5, page 75, reference 5.12.
The explanation, checklist and practice answer derive from the supplied questionnaire. Reported observations are separately contributed and manually reviewed; they are not official RISQ guidance.
Independent DeepDraft preparation guide, based on the supplied RISQ 3.2 questionnaire. Not an official RightShip product or inspection report.