The Zim Sailing ISCA® (International Sunfish Class Association™) is the only class-legal new boat for International Sunfish Class racing and is used for the ISCA World Championship. Expertly made in the USA and equipped with premium fittings built to last for recreational sailors and racers.
The Zim ISCA is a testament to the historic one-design nature of the International Sunfish Class, while also striving to improve overall durability to deliver the best possible boat to sailors. Every aspect of the boat, from hardware selection to construction methods, was carefully considered for quality to ensure that a brand-new ISCA looks and feels just like your classic boat while delivering long-term durability. Whether you are buying a boat for sunny days at the lake with the grandkids or beginning on your path to the ISCA World Championship, the Zim ISCA is the boat for you. Zim Sailing’s history of building reliable institutional boats means that ISCAs are built to last, and will be part of your family’s fleet for decades to come.
Proven Hull Construction
The Zim ISCA is thoughtfully designed and produced to improve upon durability and construction quality while keeping the boat at the same weight and performance characteristics; a true one-design, through-and-through. The foam blocks that originally provided buoyancy have been upgraded and replaced with closed-cell foam technology and superior bonding adhesive that will not absorb water, while providing stiffness to construction. As the Official Supplier of High School and College Sailing and the only North American ILCA builder, our knowledge of building durable institutional boats translates directly to building the ISCA, serving the racing and recreational markets equally well.
Premium Equipment
Working with the top suppliers in the industry, the Zim ISCA is outfitted with hardware and rigging that will be dependable for years to come. We worked with the International Sunfish Class Association to introduce class-legal Harken Carbo blocks on the boom for the first time, and a linked traveler block to improve the 2:1 system’s longevity without altering performance characteristics. North Sails are exclusively available for Zim ISCAs, and Kingfisher Ropes has developed Club and Race line packages to bring everything together. All parts are backwards-compatible with boats from previous class manufacturers.
Dealer Network
Zim Sailing is more than just our presence in Bristol, Rhode Island - we are proud to have a dealer network that spans North America, ensuring that you have access to parts, boats, and sails for your boat whether you are sailing a new Zim ISCA or a boat built by Vanguard! Our dealers are here to help you and your family get on and enjoy the water.
To find a dealer near you, click here: Dealer Finder
ISCA Race
Harken Upgrades
29mm Carbo Boom Blocks and new 2:1 Linked Traveler Block
North Racing Mainsail
White, exclusive to Zim and Dealers
Racing Spar Set
Upgraded Boom Blocks, Outhaul & Cunningham Cleats, plus Brass Gooseneck with Quick Adjust Lever
Fiberglass Blades
Race Ready Daggerboard & Rudder
Kingfisher Race Line Package
2:1 Evo X Mainsheet, developed with Maffioli for the ISCA, Dyneema Outhaul & Cunningham w/ stainless eyes for purchase knots, Dyneema Sail Ties, and Dyneema Halyard
ISCA Club
North Club Mainsail
Class legal for racing and available in 6 unique colorways!
Club Spar Set
Standard mast, upper boom, and lower boom with Racelite blocks. Classic sail rings included.
Fiberglass Blades
Race Ready Daggerboard & Rudder
Kingfisher Club Line Package
Evo Mainsheet and Evo Dinghy Halyard for great performance plus outhaul ties, daggerboard bungee, and mainsheet clip.
Wood Blade Package
Optional ISCA Club package with classic wood rudder and daggerboard (all other Club components are the same).
Standard Equipment
Included with all Zim ISCAs
2025 Zim ISCA Hull
White with Navy Blue Stripe on Aft Deck
North Sails Hiking Strap
Harken Mainsheet Ratchet Block
Wishbone Tiller w/ Extension
Updated Rudder Head
Strongest ISCA rudder head ever produced!
Classic Autobailer
Includes floating ball that won't get stuck in corners
Polished Bow Handle
On Water Photos
Hull Detail Photos
Press & Media
FAQ
The International Sunfish Class Association (ISCA) is the organization that governs the one-design class of sailboats which includes Sunfish® and the Zim-built ISCA boat. ISCA serves to maintain the one-design standards for the class and ensure that an ISCA you buy in 2024 is just as relevant as your vintage boat that has been lovingly cared for! Sunfish® is a registered trademark of VELUM LTD.
