(a) Explain the system of classification for access doors passing through watertight bulkheads of a vessel. (3) (b) State THREE circumstances under which all watertight doors must be closed when situations are defined as potentially hazardous. (3) (c) As a Senior Engineer Officer, explain to a new crew member how to pass safely through a hydraulically operated watertight door (4)
UKM Tuticorin 
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