Question 120General Subjects - 1st Asst/Chief

The correct answer is B) All motions are stopped by the loss of electric power to the crane. For an electro-hydraulic cargo-handling pedestal-type deck crane, the loss of electric power to the crane will result in an immediate stop to all crane motions, including slewing, hoisting, and luffing. This is because the crane's hydraulic and control systems rely on electric power to function, and a loss of power will cause the crane to shut down all movements for safety reasons. The other answer choices are incorrect because they do not represent events that would result in an immediate stop to all crane motions. Limit switches, safe working load cutouts, and boom limit switches are designed to stop specific crane motions, but they do not necessarily stop all crane functions at once.