🔍 Key Concepts

• Frapping lines are used to control a lifeboat’s motion alongside the embarkation deck • How vessel pitching in heavy seas affects the boat’s movement forward and aft • The safest direction and lead angle for lines that steady a boat hanging in the falls

💭 Think About

• Imagine the lifeboat hanging in the falls while the ship’s bow and stern move up and down. From which direction would lines best restrain the boat’s swinging? • Would using frapping lines on only one pair of falls (forward or after) control the boat’s overall motion, or could it twist? • Think about the purpose of tricing gear vs. frapping lines. Are frapping lines normally secured to the falls themselves or to something else?:

✅ Before You Answer

• Verify where frapping lines are normally led relative to the boat (fore-and-aft, athwartships, or directly on the falls) • Check how a 45° lead (not straight in or straight along) would affect control of the boat’s side-to-side and fore-and-aft movement • Confirm the different functions of frapping lines vs. tricing gear in lifeboat launching procedures