Maritime QuestionsCargo & Stability

Your ship is due to load scrap metal (IMSBC Code Group C). The shipper's Cargo Information Form states the cargo can be loaded in any precipitation. What should you do?

A. Accept it — this reflects customary industry practice for scrap metal
B. Flag the conflict with the IMSBC Code and your own Bulk and General Cargo Operations Manual, which require the cargo to be kept dry, and seek written justification before accepting the deviation
C. Load as instructed since the Commercial Operations Department has already approved the terms
D. Only worry about precipitation if the cargo already shows signs of self-heating
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The yacht is loading additional stores and fuel before a long passage, raising the displacement significantly. What effect does this have on stability that you, as OOW, should be aware of?
A. Increased displacement generally raises the centre of gravity if weight is added high up, and free surface effects in partially-filled tanks can reduce the effective metacentric height (GM)
B. None — stability is fixed regardless of loading
C. Only the Chief Engineer needs to consider this, never the deck watchkeeper
D. Additional weight always improves stability regardless of where it is placed
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During a survey, watertight door seals in a transverse bulkhead below the waterline are found to be perished and not closing properly. As Master, what is the significance of this for the vessel's damage stability?
A. Significant — a failed watertight closure compromises the subdivision the vessel's damage stability calculations rely on, potentially allowing progressive flooding between compartments in the event of damage
B. Negligible — watertight doors below the waterline are rarely closed anyway
C. Only relevant if the vessel carries passengers
D. This only matters when the vessel is at anchor
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