Mastering Genoa Sheet Lead Position: Tips for Optimal Sail Trim

How many times have you run forward on your racing or cruising boat to tend to something, only to stub your toe on the Genoa sheet lead block? Some racing boats even have up to three tracks, each with its own block, increasing your chances of bruising more than one toe!

The Importance of Genoa Sheet Lead Position

Despite the discomfort, these blocks are crucial for sail trim, whether you’re racing or cruising. Their position plays a significant role in setting the Genoa correctly. While the failure rate of these blocks is low, they can explode under extreme circumstances and shock-loading, especially if they’re older.

How Many Sails Does a Cruising Yacht Need?

Determining the Correct Lead Position Without Tell Tales

If you’re cruising and don’t have tell tales on your sail, you can still assess whether your lead is in the right position. Here’s a simple method:

1. Imaginary Line Method: Draw an imaginary line through the clew of the sail. If the sheet lead is correctly positioned, this line should bisect the angle of the clew.

2. Visual Inspection: From the stern, look forward as the sail comes into the rig after a tack.

   • If the leech looks tight compared to the foot (as in the red sail), the lead is too far forward and should be moved back.
   • If the leech is open and the foot is tight (as in the blue sail) once sheeted in, the lead is too far aft and should be moved forward.
   • The correct setup (as in the black sail) will show a balanced leech and foot, with the projection of the sheet lead cutting the clew angle in half.

Genoa Size Related to Sheeting Position and Performance

Using Tell Tales for Precise Lead Adjustment

For those with tell tales on their sails, setting the sheet lead becomes more precise:

1. Understanding Tell Tales: Sailmakers typically use green tell tales on the starboard side and red on the port side. If you’re on the foredeck facing the sail while on starboard tack, and the headstay is to your right, you’re looking at the starboard side of the sail.

2. Reading Tell Tales:

   Advertisement

   Who pours the best sundowner?Vote — Best Waterfront Bar →Caught ya’ looking…Advertise with ALL AT SEA →A place of your ownCaribbean real estate →
   • If on starboard tack and the green woolies are spinning or flying up, while the sail is trimmed in all the way, you might be slightly above a close-hauled course and need to bear away slightly.
   • If the green woolies are flying aft and the red ones are dancing around, the sail may be slightly over-trimmed, or you’re sailing below a close-hauled course.

Furling Genoas

Steps for Determining Optimum Sheet Lead Position

1. Initial Setup: Use the earlier recommendations for initial lead setup. In medium sailing conditions, point the boat on a close-hauled course.

2. Fine-Tuning with Tell Tales: Slowly bring the boat into the wind a degree at a time.

   • If the top green woolie jumps first on starboard tack, the lead must go forward, effectively moving the pointer to the top of the sail.
   • If the bottom green woolie jumps first, the lead must move back, effectively moving the pointer down the sail.

3. Adjusting for Reefing: If you have a reefing headsail, ensure additional tell tales are visible beyond the luff roll. When reefing, remember to move the car forward.

Invite a Sailmaker for Expert Guidance

Finally, your third option is to invite your closest sailmaker out for a sail. They can guide you through this process, ensuring your sail is trimmed to perfection.

Doug Stewart has written for ALL AT SEA since 2004.