What is the benefit of using frapping lines during passenger boarding?

Using frapping lines during passenger boarding primarily serves to secure the lifeboat's position. When lifeboats are in use, particularly during the boarding of passengers, it's crucial to ensure that the boat remains steady and stable. Fraping lines help to pull the sides of the lifeboat together and secure it against the vessel or the docking area, preventing unwanted movement caused by waves, winds, or the motion of passengers boarding.

This method enhances safety by avoiding shifts that could lead to accidents while passengers are transferring to the lifeboat. Stability is vital in maintaining order during boarding, ensuring that everyone can embark safely without the risk of tipping or losing balance. In heavy weather conditions or when there are many passengers, the use of frapping lines is even more critical to maintaining control of the lifeboat.

This functional aspect distinguishes frapping lines from options related to increasing boarding speed or enhancing communication, which do not directly contribute to the physical stability of the lifeboat during boarding.