The signal man assisting the crane operator has his arm extended and is pointing his finger in the direction to move the boom. This is the signal to __________.
• Standard crane hand signals used in marine cargo operations • Difference between moving the boom versus moving the load • How direction of the signal (arm and finger) relates to direction of boom movement
• Ask yourself: Is the signal man indicating that the boom should move horizontally around its base, or change its length, or move the load up or down? • Think about which motion is specifically associated with pointing in the direction the boom should travel along a horizontal arc. • Which choice describes a movement around a vertical axis at the crane’s pedestal rather than in or out or up or down?
• Identify which option refers to changing the horizontal direction of the boom rather than its length or the load’s vertical position. • Eliminate choices that clearly mean moving the load straight up or down. • Confirm which term is commonly used for rotating a crane boom around its base in standard hand-signal charts.
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