Sven Yrvindvideo
New, tandem Zeppelin and redundancy
23 January 2026 · 5 min · 1K views
What this video covers
Sven Yrvind is constructing a small, shallow-draft boat designed for high-latitude sailing, with plans for a 14,000-mile nonstop voyage through the Southern Ocean.▶ 0:05 The build focuses on extreme redundancy and durability for the upcoming transit south of Africa and Australia toward New Zealand. Recent progress includes installing navigation lights using 2.5 mm² cabling, an upgrade from the previous 1.5 mm² wire to ensure electrical reliability.▶ 1:36 Yrvind is mounting two Aqua Signal white all-around lights on each mast, which also serve as rungs for a climbing ladder.▶ 3:32 To further increase safety, he is implementing tandem Zeppelin knots on critical lines, doubling the knots on a single rope to prevent slippage.▶ 4:10 These modifications reflect a design philosophy that prioritizes over-engineering and system backups for long-distance, solo offshore passages.
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