What are the long spars from the mast of a derrick used for?

The long spars from the mast of a derrick are primarily used for guiding loads during lifting. This function is crucial in ensuring that the loads are lifted and moved safely and accurately. The spars help to extend the reach of the lifting apparatus, allowing for effective maneuvering of heavy loads. By guiding the loads, the spars contribute to precise placement and minimize the risk of accidents or equipment failure during lifting operations. The design of the derrick combined with the use of these spars enhances both the safety and efficiency of lifting operations on ships and construction sites.