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Q9. During inspection of propeller in the dry dock, a surface crack has been noticed on one of the blades.  State the steps taking by you as chief engineer for successful handling of the situation.  Also, if some surface cracks are noticed on the keyway of a tail-end shaft, state the steps taken by you for tackling the problem.  Explain the effects in case the cracks, as stated, are not dealt with at the proper time.