The signal man assisting the crane operator...

Question 1 of 2707066636ee728f7522a1c518936

The signal man assisting the crane operator first taps his elbow with one hand and then proceeds to use regular signals. This is the signal to __________.

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Question 1 of 27070

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The signal man assisting the crane operator first taps his elbow with one hand and then proceeds to use regular signals. This is the signal to __________.

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🔍 Key Concepts

• Standard crane hand signals used in marine cargo operations • How a signal person alerts the operator to a change in which hoist/line will be used • Difference between commands about speed and commands about which line or which hoist to operate

💭 Think About

• Is tapping the elbow more likely to relate to speed or to which part of the crane should be operated? • Which of these choices (main hoist, whip line, slow, faster) is most logically something you’d need to identify first before giving normal hoist/lower/stop signals? • Once the elbow is tapped and then regular signals are used, what is the purpose of that preliminary motion?

✅ Before You Answer

• Be clear on the difference between main hoist and whip line/auxiliary line in crane operations • Ask yourself whether “proceed slowly” or “increase speed” would normally require a separate, unique pre‑signal before other standard motions • Confirm that this initial elbow tap is a way of selecting the line/hoist before using the standard motion commands