Vessel is subjected to more severe stress and strains than normal dry dock. |
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Uneven distribution of weight. |
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Additional weight of the vessel |
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Unable to achieve required draft for entering |
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Certain extra precautions to be taken. |
Discharge cargoes at port facility |
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Transship cargo |
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Press up the DB tanks beneath the holds. |
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Distribute the weight of the cargo evenly over the inner bottom. |
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Avoid local loading. |
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Inform yard about cargo's characteristics, cargo plan and weight distribution in respective holds. |
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All cargoes onboard properly lashed, secured. |
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Communicate with yard with respect to extra shores or keel/bilge blocks. |
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Vessel upright, minimize free surface effect, adequate stability, trimmed as per yard's requirement. |
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Stand-by and prepare fire fighting equipments for repair and adjacent areas. |
Not possible for normal dry docking. |
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Damage or repair works in a suitable position. |
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Possible to pump out some of the dock water sufficient to expose the affected area. |
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Leave the vessel partly waterborne. |
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Reduce the reactions on the blocks. |
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Reduce the tendencies of hogging. |
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Reduce the tendencies of sagging. |