Which of the following is NOT a Class 1 knot?

The bowline is not classified as a Class 1 knot. Class 1 knots are typically characterized by their ability to form a fixed loop at the end of a rope that does not slip. They have specific applications and are crucial for safety in certain scenarios, such as climbing, rescue operations, and securing loads.

The bowline creates a fixed loop that can be easily untied after being loaded, making it a popular choice in many applications, but it is not generally included in the classification of Class 1 knots due to its unique uses and the versatility it offers.

Understanding the distinctions among knots is essential in various fields such as sailing, climbing, and medical settings, where secure and reliable knots can make a significant difference in safety and effectiveness. Other knots listed in the options, such as the water tape, double fish, and square knots, typically belong to the categories of securing or binding, making them fit the criteria for Class 1 knots more appropriately than the bowline.