Which of the following hazards is the main concern when entering a ballast tank?
Direct Answer
Option D: lack of oxygen
The primary hazard when entering a ballast tank is oxygen deficiency. Corrosion processes, inerting, or displacement by other gases can rapidly deplete oxygen, creating an immediately dangerous atmosphere. ISGOTT and SOLAS Chapter XI-1/7 emphasize testing for oxygen before entry.
All Options
Detailed Explanation & Context
The primary hazard when entering a ballast tank is oxygen deficiency. Corrosion processes, inerting, or displacement by other gases can rapidly deplete oxygen, creating an immediately dangerous atmosphere. ISGOTT and SOLAS Chapter XI-1/7 emphasize testing for oxygen before entry.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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