🔍 Key Concepts

• Ro-Ro vessel (roll-on/roll-off) cargo securing practices for heavy road vehicles and trailers • Differences between chain-based vs webbing/strap-based tensioning devices • How mechanical advantage and positive locking are provided in common chain tensioning hardware

💭 Think About

• First, identify which options are typically used with chain rather than with belts or web straps. • Think about which device provides strong mechanical leverage and a secure lock so that a heavy truck or trailer will not move in heavy weather. • Consider which device name is most commonly associated with lashing chains on vehicle decks rather than light cargo lashings.

✅ Before You Answer

• Eliminate any devices that are usually used with web straps or light cargo, not with steel chain. • Ask yourself: which option is standard on Ro-Ro vehicle decks for securing trucks with short lengths of lashing chain? • Verify that the device you pick can be quickly released yet firmly locked, and is specifically designed for chain links, not for passing a strap through a buckle.