SEILmagasinetvideo
Jib trim
August 13, 2025 · 3 min · 1K views
What this video covers
Thomas Nilsson and Sigmund Hertzberg demonstrate headsail trimming techniques to optimize sail shape and airflow. To trim a jib, sailors should monitor the telltales, focusing on the lower set when beating and observing the full height of the sail when reaching.▶ 0:15 Adjusting the jib halyard tension and the jib sheet controls the depth of the sail; slacking the halyard or sheet increases depth for more power.▶ 0:48 The jib car position dictates the angle of the sheet’s pull.▶ 0:48 Moving the car aft flattens the bottom of the sail and opens the leech, which is ideal for heavy wind.▶ 1:15 Moving the car forward deepens the bottom and closes the leech for increased power in lighter conditions.▶ 1:36 Using an outboard lead block attached to the rail improves control during reaching, while an inboard lead narrows the sheeting angle for tighter upwind sailing at the cost of a narrower steering groove.▶ 1:36
More from SEILmagasinet
From SEILmagasinet — see the channel’s boat, crew, and every analyzed 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.



