Stern Line
A mooring line used to secure the aft (stern) of a vessel to a dock, quay, or another fixed structure.
A stern line is an essential component of a vessel’s mooring system, specifically designed to stabilise and secure the rear (stern) of the boat when it is docked. It is typically one of several lines used in conjunction with bow lines, spring lines, and breast lines to ensure the vessel remains safely in position, preventing unwanted movement caused by wind, currents, or tidal changes. The stern line is attached to a cleat, bollard, or other secure fitting on the stern of the vessel and then fastened to a corresponding point on the dock or mooring structure.
The length and material of the stern line are chosen based on the size and type of the vessel, as well as the environmental conditions of the mooring location. For smaller boats, the stern line is often made from durable synthetic fibres like nylon, which provide strength and elasticity to absorb shock loads. Larger vessels may require heavier-duty materials such as steel wire or high-tensile synthetic ropes. Proper handling and tensioning of the stern line are critical to maintaining the vessel’s stability and preventing undue strain on the mooring equipment or the vessel itself.
In practice, the stern line is often used in tandem with other lines to create a balanced mooring arrangement. For example, when docking a vessel, the stern line is typically secured after the bow line to ensure the boat is aligned correctly with the dock.
