What is the primary advantage of using the round turn and two half hitches for securing a boat?

The primary advantage of using the round turn and two half hitches for securing a boat is that it does not jam and is easy to undo. This knot is particularly effective in securing lines because it creates a strong hold without becoming overly tight. When the knot is tied properly, it allows for tension to be applied without the risk of the knot becoming stuck, which can be critical in boating scenarios where quick adjustments or releases may be necessary.

Being able to easily untie the knot after it has been under load makes it a practical choice for boaters who need to secure lines for mooring or docking. In situations where time and safety are essential, having a knot that can be quickly and easily released is a significant advantage. Other knotting methods may bind under tension, complicating the process of untieing when it’s necessary to quickly free a line.