Heaving lines

also known as throwing lines, are used on yachts for various applications:

1. Mooring and Anchoring:
   Throw lines can be used to throw a line to a dock or mooring point, making it easier to secure the boat safely.
2. Assistance:
   In emergencies, throw lines can be quickly thrown to other boats or people in the water, providing them with assistance to get back on board.
3. Communication:
   They serve as communication tools between vessels during maneuvers such as arriving at the port or mooring another ship.