Square Top Racing Mainsail


Square Top Mainsails, our most advanced model, dominate Grand Prix racing worldwide. The square top profile provides highly efficient progressive twist, reduced mast tip vortex and optimized sail area distribution. North designers precisely balance sail camber with head width while accounting for specific mast bend characteristics and target sailing conditions. All sail elements work together, including membrane modulus, batten stiffness, and batten configuration – resulting in finely controlled airfoil performance.


Boom Furling Mainsail Pack included:

  • Rule Optimized Roach Profile
  • Optimized Gaff Batten Angle
  • 1 or more Full Length Battens
  • RBS E-Glass Tapered Battens*
  • Exclusive Tie in Batten Adjusters
  • Hard Braid Luff Rope
  • Cunningham
  • Adjustable Leech and Foot Cords
  • Loose Foot with Integral Foot Shelf
  • Exclusive Teardrop Corner Reinforcements
  • Stainless Steel Rings
  • Racing Trim Stripes
  • Nylon Twist (Leech) Telltales
  • Yarn Flow (Horizontal) Telltales
  • Class Insignia
  • Sail Numbers and Country Code
  • Certified Measurement
  • Drawstring Sail Bag

North Sails Optional:

  • Reef Points
  • Carbon Battens
  • Simple Luff Slides
  • Custom Luff & Batten Car Systems
  • Overhead Leech Cord
  • Spreader Tip Patches
  • Custom Graphics

Square Top Racing Mainsail

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3Di Raw

3Di Raw is the lightest and fastest version of our composite molded sail technology. Raw is the ultimate evolution of racing sails, incorporating only the essential elements for high performance – with nothing unnecessary added. Due to its unequaled level of shape-holding and sail stability, 3Di Raw has dominated Grand Prix race courses worldwide and can now be found across all levels of racing, on boats of all sizes.

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Square Top Racing Mainsail Square Top Racing Mainsail for sale

NPL Sport

NPL Sport sails feature high-performance North Sails Xi Race laminates, which are produced using the world’s most advanced sailcloth laminator. The result is exceptional laminate bonding with minimum adhesive. Our integrated eXact™ process allows on-the-fly application of variable-angle x-scrims that are unique to the industry. eXact x-scrims eliminate the parasitic bulk of carrier yarns used in pre-made scrims.

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