Sailcloth & Materials
Woven cloth, laminates, fibers and weight explained through the jobs they must do at sea.
SAILMAKER'S FIELDBOOK · UPDATED 25 AUGUST 2026
Better sail decisions start with better observations.
A technical marine desk for choosing cloth, measuring sails, reading wear and tuning the rig one controlled change at a time.
01 Boat02 Cloth03 Conditions
Cloth, hardware and notes ready for the next question.
06 ENTRY POINTS
Choose the part of the boat you need to understand.
Broad doors for sailors, technicians and marine brands. The detail lives in the notes beneath them.
Sails & Design
Mainsails, headsails, spinnakers and panel layouts, with the load path kept in view.
Rigging & Trim
Mast setup and sail controls translated into observations a crew can record.
Care & Repair
Inspect chafe, UV, seams and hardware before a small fault becomes a long repair.
Boat Gear & Systems
Reefing gear, blocks, slides and measurement tools chosen with compatibility in mind.
Wind & Seamanship
Beaufort language, sail choice and conservative handling for changing water.
THE LATEST NOTES
Technical reading from the loft and the water.
Each note is dated because cloth, hardware and advice change. Browse the live notebook
woven vs. laminate sailcloth
Woven polyester and laminate cloth solve different problems. Start with the load path, handling pattern and repair expectations, not a material slogan.
Dacron sailcloth weight
A cloth weight is one useful clue, not a durability score. Read it alongside boat size, cut, loads, handling and the sail's exposure to sun.
mainsail vs. genoa
The mainsail and genoa work as a pair, yet each changes balance, handling and reefing in a different way.
crosscut vs. radial sails
Panel direction is a load-path decision. Crosscut and radial layouts distribute cloth, seams and reinforcement differently.
mast tuning basics
A mast tune is a sequence of observations under load, not a single tension number copied from another boat.
mainsail trim controls
Vang, outhaul, cunningham, sheet and traveler each alter part of the sail's shape. Learn the signal before chasing speed.
how to inspect sails
Spread the sail clean and dry, then inspect load points, edges, seams, hardware and cloth before the first long day.
sail repair kit
A useful repair kit is organized by the failure you may see: abrasion, a small tear, loose stitching, a batten pocket or a missing fastener.
THE DESK'S RULE
Measure twice. Change one thing.
The Fieldbook uses primary manuals, manufacturer descriptions and repair references, then states the boundary around each recommendation. Read the method · Open the source index · Measure a sail.
TRANSPARENCY
Who keeps the notebook?
Read how corrections, commercial relationships and source dates are handled.
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