🔍 Key Concepts

• Purpose of frapping lines when lowering a lifeboat in a seaway • How to control the boat’s movement (swinging in/out, fore‑and‑aft) as it nears the water • The effect of the angle of the frapping lines on control and safety

💭 Think About

• In heavy seas, what kind of motion of the lifeboat are you most worried about as it’s lowered—side‑to‑side, fore‑and‑aft, or up‑and‑down, and how do frapping lines help with that? • If the lines are too close to the falls (straight up and down) or too far out, what happens to your ability to keep the boat snug alongside? • Which arrangement of frapping lines would give the best mechanical advantage for pulling the boat in and damping its motion against the ship’s side?

✅ Before You Answer

• Make sure you know that frapping lines are used to steady and control the lifeboat against the ship’s side, not to lift it • Visualize the geometry of the lines: which option would let crew on deck best pull the boat toward the ship and limit swinging? • Check which choices would not provide effective lateral control of the boat in heavy seas (too vertical or not on both falls)