You’ve been taught in previous levels that the Golden Rule to Winching is Lines to the Load. That’s a simplified way of looking at mechanical advantage. Welcome to Level 6/7. In the Heavy-Duty discipline, casualties have gotten heavier, resistance has gotten greater, therefore it’s important to understand that any angle included in the rigging and especially at a snatch block, can lead to higher line loads. Let’s dive into what happens when we calculate line load based upon more than just simple lines to the load.
