What are the lines called that are passed around the falls to secure the boat while passengers are boarding?

The lines that are passed around the falls to secure the boat while passengers are boarding are known as frapping lines. These lines are used to secure the lifeboat to the falls and help maintain stability during the loading and unloading process. By ensuring that the boat is secured, frapping lines make it safer for passengers to embark or disembark.

Safety lines, while they suggest a purpose related to ensuring safety, do not specifically describe the lines used for securing a lifeboat in this context. Tricing lines are used to lift and lower the boat but are not specifically for securing it during passenger boarding. Anchor lines are used to secure a vessel to a fixed point on the seabed and do not apply in the context of boarding operations. Therefore, frapping lines are the proper terminology for the specific function of securing the lifeboat during boarding.