What is a spring line?

A spring line is a rope or cable used on boats or ships to help secure them to a dock or pier. It is usually attached at an angle to the boat or ship, running from the bow or stern to a fixed point on the dock.

Spring lines are important for controlling the movement of the vessel while moored, especially in situations where there are strong winds or currents that could cause the boat to drift away from the dock. By adjusting the tension on the spring lines, the boat can be kept in position and prevented from drifting or hitting other boats or structures.

Spring lines are typically made of strong, durable materials such as nylon, polyester, or steel wire rope. They are also often equipped with sturdy loops or hooks on each end for easy attachment to cleats on the boat and dock.

Overall, spring lines play a crucial role in safe and secure mooring of boats and ships, providing stability and control in various docking situations.