The signal man assisting the crane operator...

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Question 1 of 2066636ee728f7522a1c51893c

The signal man assisting the crane operator has one hand occupied and one fist in front of his chest with the thumb pointing outward and is tapping his chest with the heel of his fist. This is the signal to __________.

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🔍 Key Concepts

• Standard crane hand signals used in marine and shoreside cargo operations • The difference between boom hoist/lower and boom extend/retract • How body position or hand orientation often indicates direction of boom movement

💭 Think About

• Visualize what part of the crane moves when you change the boom angle versus when you change the boom length. Which motion does this chest-tapping gesture better represent? • Think about why the thumb is pointing outward from the chest. Is it suggesting moving the boom toward or away from the crane body? • Recall: when only one hand is available, how are boom movements commonly signaled differently from load up/down movements?

✅ Before You Answer

• Review a standard crane hand signal chart (OSHA/ASME or company training manual) for boom movements. • Confirm which boom signal specifically uses one fist in front of the chest with the thumb extended and a tapping motion on the chest. • Make sure you distinguish between changing boom angle (up/down) and changing boom length (extend/retract) before selecting your answer.

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