Sven Yrvind · video

What this video covers

Sven Yrvind modifies the bumpkin design on his boat, Urwind, to improve sail sheeting and storage.0:07 The new configuration features two side-mounted bumpkins that do not increase the vessel's overall length, allowing the boat to fit inside a shipping container.0:07 He uses a figure-eight knot and a removable tiller system to retract the rudder assembly for compact storage.1:04 Yrvind incorporates techniques learned from Japanese oyster fishermen, specifically the use of a "roo" or "yolo" oar system with a pin-and-hollow mechanism to prevent the oar from jumping out in rough weather.5:48 He plans to replace his current polyester lines with Dyneema or Spectra to reduce friction against stainless steel fittings.7:06 To secure the new bumpkin joints, he applies epoxy mixed with silica and injects additional epoxy into the vertical supports.8:57 Yrvind also considers future installation of an electric outboard motor but expresses concern regarding the fire risks associated with lithium batteries.3:00

More from Sven Yrvind

Four Sheets of Divinycell for the Hull Sides – I Think That's Enough.Oct 2026Nervously Cutting the Divinycell Sheets.Oct 2026Trying to Get the Sheerline Right.Oct 2026More molds up.Oct 2026

From Sven Yrvind — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.