Cruising sail : mainsail (tri-radial)
300 North Sails Sailmaking

North Marathon and Performance Series 300 radial sails are made using laminates consisting of a mylar film core sandwiched between two thin layers of woven polyester fabric. They deliver lighter weight, lower stretch and improved shapeholding for small-to-midsize cruising and racing boats. The woven yarns carry load in the primary strain directions while the mylar film limits distortion in the off-threadline direction. The woven polyester outer layers maintain a soft feel for easy handling while radial construction delivers lower stretch and a smoother, longer lasting shape.

Marathon Series 300 sails are designed for recreational cruising.
Performance Series 300 sails are specifically optimized for performance cruising, class racing, handicap rules or rating rules.