Question 638 Deck General
70% to passThe 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 _______________.
A
extend the boom
B
hoist the boom
C
retract the boom
D
lower the boom
AI Explanation
The correct answer is C) retract the boom. The hand signal where the signalman has one hand occupied and the other fist is tapping their chest with the thumb pointing outward is the standard signal to indicate that the crane operator should retract the boom. This is a recognized hand signal in crane operations and is specified in various industry standards and regulations governing crane safety and signaling. The other answer choices are incorrect because they do not match the specific hand signal described. Extending, hoisting, or lowering the boom would have different corresponding hand signals.
Related Questions
Q2484:While towing, bridle legs of unequal lengths may cause _______________.
Q4219:When comparing twin screw tug to single-screw tugs, which statement about a twin...
Q2056:In illustration D044DG below, what is the mooring line labeled "H" called?
Q2568:Under the Pollution Regulations, how long must garbage disposal records be retai...
Q2141:A bench hook is used for _______________.
Ready to test your knowledge?
Take a Deck General Practice Exam
Official Resources
Pass Your Coast Guard Licensing Exams!
Study offline, track your progress, and simulate real exams with the Coast Guard Exams app