A bowline (pronounced "boh-linn") is a foundational sailing knot used to create a secure, fixed loop at the end of a rope that will not slip or jam under load. Known as the "king of knots," it is trusted for its ability to be easily untied even after supporting significant tension.

Key Characteristics and Uses:
Knot Function: Forms a reliable, non-slipping loop used for mooring, hoisting, or securing lines to rings and cleats.

Security Note: While secure, modern, low-friction ropes can cause it to walk (loosen), so it should be backed up or monitored.

Traditional Nautical Use: Historically, a "bowline" was a rope used to keep the weather edge of a square sail taut forward when sailing upwind (close-hauled).

Tying Method: Often remembered as "the rabbit comes out of the hole, goes around the tree, and goes back down the hole".