Chock

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A chock is a safety and securing device used to prevent unwanted movement of cargo, vehicles, or equipment during loading, unloading, storage, or transportation. Chocks are typically made from wood, rubber, steel, or composite materials and are placed against wheels, tracks, or curved surfaces. In maritime and project cargo operations, chocks play a crucial role in stabilizing heavy machinery, rolling cargo, and out-of-gauge equipment on vessels, flat racks, or trailers. Properly installed chocks help distribute weight evenly and reduce the risk of cargo shifting due to vibration, weather, or vessel motion. They are commonly used together with lashing, blocking, and bracing systems to ensure compliance with safety standards. Incorrect or inadequate chocking can result in cargo damage, safety hazards, or transport delays.