Adventure Sailing / Evaluating Used Sails
The engine you can't Google.
When you buy a boat, the engine gets logs, a survey, and a list of questions. The sails get a glance and a broker’s assurance. The wardrobe is the primary propulsion system, and it has a knowable condition. This is how to read it before you sign.
What it covers
Sails degrade slowly, and silently.
A degraded sail does not stop working. It works badly, in ways that feel like other problems. The boat wants to round up in twenty knots. The autopilot fights itself. Six months after the purchase, the new owner is chasing a handling problem that was sitting in the wardrobe all along.
Sails have no oil pressure gauge and no service interval. But the condition is knowable if you understand what to look at, and a premium racing wardrobe on a ten-year-old boat can have less life left in it than a mid-market cruising suit from the same year.
What you'll learn
Read a wardrobe like a surveyor.
01
The receipts
The sail invoice is the service history. A named mill, a stated cloth grade, and the age give a reasonable estimate of remaining life. No invoice means an unknown liability.
02
The dock inspection
UV cover, seam stitching, cloth texture, and the patches at head, tack and clew. What crisp, floppy and papery cloth each tell you, and which repairs are a red flag.
03
The draft photograph
Get to windward in ten knots, load the sails, and photograph the mainsail from the boom. Where the draft sits tells you whether the shape is there or gone.
04
The negotiation
How to put the wardrobe’s real condition into the price before you exchange contracts, what replacement costs look like by boat size, and when to walk away.
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Common questions
Evaluating used sails, answered.
How can you tell if a sail has lost its shape?
Sail to windward in ten knots or more, load the sail, and look at where the draft, the deepest part of the curve, is sitting. In a good sail it stays in the forward third. When it has moved aft of the middle, the shape is gone, however clean the cloth looks.
Are premium racing sails a good sign on a used boat?
Not necessarily. Racing sails are built for shape, not longevity, and they are consumables by design. A North, Doyle or Quantum racing wardrobe on an older boat may have less usable life than a mid-market cruising suit of the same age.
Should I get used sails checked before buying a boat?
Yes. Photograph a loaded mainsail and send it to a sailmaker. Any competent loft can tell whether the shape is there and give you a replacement figure to use in the negotiation.