Sven Yrvind · video

What this video covers

Sven Yrvind fabricates a custom masthead fitting for his small, high-latitude sailboat designed for long-distance Southern Ocean voyages.▶ 0:02 The component, constructed from Tufnol, consolidates five separate functions into a single unit to reduce complexity and potential failure points at the top of the mast. The fitting incorporates a primary sheave for the halyard, two dedicated attachment points for the boom's topping lifts, and an integrated mount for an antenna.▶ 2:25 Yrvind drills the halyard hole to 10 mm to ensure smooth line movement.▶ 2:06 To increase structural integrity and water resistance, he reinforces the assembly with fiberglass cloth and a structural epoxy mixture thickened with powder.▶ 3:14 He tests the installation by passing a line through the masthead to confirm gravity-fed clearance.▶ 3:14 This design prioritizes reliability for remote, single-handed sailing where the masthead remains inaccessible for repairs.

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