sailor's knot

Translations
морской узел
He tied a sailor's knot to secure the boat.
Он завязал морской узел, чтобы закрепить лодку.
Definitions
A sailor's knot is a type of knot that is specifically designed for use in sailing and maritime activities. These knots are used for securing ropes, lines, and sails, and are characterized by their strength, reliability, and ease of tying and untying, even after being subjected to heavy loads.