What is Jacklines?
Jacklines are strong lines that run fore-and-aft along the deck, typically made from webbing.
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What it is
Jacklines are strong lines that run fore-and-aft along the deck, typically made from webbing.
What it does
Jacklines are continuous safety lines that run the length of the boat, allowing crew to clip in their tether and stay secured while moving on deck. When properly rigged, they provide freedom of movement from bow to stern while reducing the risk of going overboard in rough conditions or at night.
Why it matters
Man overboard incidents are among the most serious emergencies at sea, particularly when sailing short-handed or in rough conditions. Jacklines provide a critical safety system by ensuring crew remain physically secured to the vessel at all times.They are especially important during offshore passages.
General Maintenance
Inspect jacklines before every sailing season and after any heavy weather. Check for chafe, UV damage and secure attachment points. If jacklines are tied to attachment points, check regularly throughout the season for secure knots. Recent advances in webbing technology has improved its lifespan, but sailors should regularly check their jacklines for wear and consider replacing every 3-5 years. Test all attachment points annually and ensure deck pad eyes are rated for the forces possible. Consider removing jacklines during offseasons to reduce UV exposure.
Common Issues
- UV degradation of webbing causing reduced strength over time
- Incorrect material used, causing jacklines to snap or overstretch
- Chafe around deck hardware
- Attachment points working loose or corroding
- Lines becoming slack and creating tripping hazards
- Jacklines rigged too far outboard, allowing crew to go over the lifelines when tethered
- Using inappropriate hardware or knots that reduce strength
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