Cargo change-over from bulk to oil (and vice versa) - OBO vessels

This video describes the procedure to prepare a vessel when changing over cargo from bulk ores to oil (and vice versa). This happens on OBO (oil and bulk ores) vessels.
Contents of this video will benefit mariners preparing for exams (written and oral examinations).
Mariners will also benefit by watching the following videos:
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[@thesailorfromindia1218]

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