Question 546 Deck General

The correct answer is A) Luffing while the load remains at a constant height. Level-luffing a crane refers to the ability to raise or lower the crane's boom while keeping the load at a constant height. This is achieved by simultaneously adjusting the boom angle and the hoist line length to maintain the desired load position. This functionality is important for precision lifting operations where the load needs to be kept at a specific elevation. The other options are incorrect because they do not accurately describe the meaning of level-luffing. Option B refers to slewing the boom left or right, which is a different crane movement. Option C describes maintaining the boom at a constant height, which is not the same as keeping the load at a constant height.