What type of knot is commonly used for rescue operations?

The bowline knot is widely utilized in rescue operations due to its ability to create a fixed loop at the end of a rope that won't slip or come undone under load. This characteristic makes it particularly valuable in scenarios where safety and reliability are paramount, such as securing harnesses to rescuers or patients.

One of the bowline's main advantages is that it is easy to untie even after being subjected to a heavy load, which is critical during rescue operations when swift and efficient untying can save time and potentially lives. In addition, the knot can be easily visualized and tied under stress, making it a preferred choice for rescuers working in challenging environments.

While other knots, such as the square knot, slipknot, and half hitch, have their uses in various applications, they do not offer the same level of security and ease of untie that the bowline provides, making them less suitable for the high-stakes context of rescue operations.