Sail trimming is the delicate art of adjusting the sails to help your boat perform to the best of its ability in current wind conditions. Until recently, for me it meant randomly tweaking lines until something either stopped flapping, making a noise or just “looked better”. 😬

Thankfully as I started to read up on it I realised that proper sail trim is not actually that difficult. Let’s face it: we’re pulling on three corners of a triangle with a couple of control lines. We’re not tuning a Stradivarius violin!

Below is a selection of videos and articles which explain all you need to know.

First, a quick re-cap on the parts of a sail (using the main as an example).

Apparent wind

Mainsail trim

Genoa and jib trim

Spinnaker trim

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