What term describes the long spars extending from the mast of a derrick to support lifted objects?

The term that accurately describes the long spars extending from the mast of a derrick to support lifted objects is "Cargo Booms." Cargo booms are critical components of a derrick system, specifically designed to extend outward and support heavy loads as they are lifted and lowered. These booms provide the necessary reach and stability when handling cargo, which is essential for safe operations on an aircraft carrier or any maritime setting.

Understanding the function of cargo booms is essential because they play a significant role in load management and operations, ensuring that the weight is evenly distributed as items are hoisted. In a shipboard explosive safety context, properly managing the use of cargo booms is vital to mitigate risks associated with lifting explosives and other hazardous materials.