Sven Yrvind · video

What this video covers

Sven Yrvind fabricates a custom lock for the Jungström's companionway hatch to prevent theft of the small, conspicuous yellow boat while he is ashore.▶ 0:05 The lock required repeated fitting work — filing down a component by a few tenths of a millimeter, polishing it, bending and grinding it to shape — before it seated correctly.▶ 0:50 The finished system uses large, visible hardware on both sides of the door so that from a distance the boat clearly appears secured, a deliberate deterrent.▶ 3:41 The lock can also be removed and stowed below when at sea, keeping the padlock out of salt water.▶ 2:46 Yrvind notes the system allows a small ventilation gap for use in hot climates during short stops.▶ 2:14 A secondary segment covers a Jungström boat he spots while out for hardware: he describes it as the first design to use a rotating mast that winds up the sail, built by a Stockholm professor who also specified that every hull surface follow a radius to reduce resistance, and notes he has sailed on one himself.▶ 5:14

More from Sven Yrvind

Kai the bow paddle.Jul 2026About safety.Jul 2026My solution to crossing the Doldrums without using an engine.Jul 2026Goose Barnacles Remower.Jul 2026

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