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Alongside berthing with a spring line

February 17, 2023 · 19 min · 2K views

What this video covers

Securing a boat alongside a dock in strong crosswinds requires shifting from a stern spring line to a beam line to maintain hull contact. When wind speeds reach 15 to 20 knots, a stern spring line creates a pivot point that allows the wind to push the bow away from the dock, making it difficult to keep the vessel flush.0:46 A beam line, however, attaches near the center of the hull’s lateral windage, minimizing the tendency for the boat to pivot. By engaging the engine in forward gear while tensioning a beam line, the skipper generates a lateral force that pulls the boat toward the dock.2:52 If the vessel drifts away from the dock, the beam line configuration allows the skipper to use the rudder to steer the boat back into position, whereas a stern spring line often leaves the boat pinned in an awkward, unrecoverable orientation.12:29 A beam line provides superior control and stability in high-wind docking scenarios compared to a stern spring line.

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