Sea Anchor

A device, typically a canvas or synthetic fabric drogue, deployed in the water to stabilise a vessel by creating drag and reducing drift in rough seas or strong currents.

A sea anchor is a critical piece of equipment used in maritime navigation and safety. It is designed to be deployed off the bow or stern of a vessel, depending on the desired effect. The sea anchor functions by increasing resistance in the water, which slows the vessel’s drift and helps maintain its orientation relative to the wind and waves. This is particularly useful in heavy weather conditions, where maintaining control and stability is paramount to avoid capsizing or broaching. 

Sea anchors are often constructed from durable materials such as heavy-duty canvas, nylon, or other synthetic fabrics, and they are shaped to maximise drag. They are attached to the vessel by a strong line, and their size is typically proportional to the size and displacement of the boat. Smaller vessels may use a drogue, which is a similar device but generally smaller and used for slightly different purposes, such as controlling speed during a downwind run.

The primary purpose of a sea anchor is to keep the bow of the vessel facing into the wind and waves, which is the most stable and safe position during a storm. This reduces the risk of the vessel being rolled or swamped by large waves hitting it broadside. Additionally, it can be used to slow the drift of a vessel in open water, allowing for repairs, fishing, or waiting for rescue without being carried too far off course. Sea anchors are an essential safety tool for sailors, particularly those venturing into open or offshore waters, where conditions can change rapidly and unpredictably.