🔍 Key Concepts

• Cargo gear marking requirements in 46 CFR (look for sections on cargo handling gear or rigging) • Where a boom’s safe working load (SWL) and design angle would be most visible to the crew actually using it • The difference between mast/king post, boom head, boom heel, and deck locations on a cargo rig

💭 Think About

• Ask yourself: when rigging and operating a boom, where does the operator or deck crew naturally look to confirm the boom’s rating and design angle? • Which part of the boom actually carries the lifting tackle and hook when in use, and would logically be labeled for SWL? • Is it more useful for the marking to be on a fixed vertical support, on the lifting end, on the pivot end, or on the deck where it might be obstructed?

✅ Before You Answer

• Verify which part of the boom is called the head (outboard/lifting end) and which is the heel (inboard/pivot end). • Consider which location keeps the SWL marking clearly visible in all normal working positions of the boom. • Eliminate any option where the marking could easily be hidden by cargo, deck gear, or crew during operations.