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.
ISCA - Sun Fish
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ISCA Race
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Harken Upgrades
29mm Carbo Boom Blocks and new 2:1 Linked Traveler Block
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North Racing Mainsail
White, exclusive to Zim and Dealers
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Racing Spar Set
Upgraded Boom Blocks, Outhaul & Cunningham Cleats, plus Brass Gooseneck with Quick Adjust Lever
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Fiberglass Blades
Race Ready Daggerboard & Rudder
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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
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ISCA Club
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North Club Mainsail
Class legal for racing and available in 6 unique colorways!
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Club Spar Set
Standard mast, upper boom, and lower boom with Racelite blocks. Classic sail rings included.
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Fiberglass Blades
Race Ready Daggerboard & Rudder
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Kingfisher Club Line Package
Evo Mainsheet and Evo Dinghy Halyard for great performance plus outhaul ties, daggerboard bungee, and mainsheet clip.
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Wood Blade Package
Optional ISCA Club package with classic wood rudder and daggerboard (all other Club components are the same).
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Standard Equipment
Included with all Zim ISCAs
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2025 Zim ISCA Hull
White with Navy Blue Stripe on Aft Deck
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North Sails Hiking Strap
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Harken Mainsheet Ratchet Block
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Wishbone Tiller w/ Extension
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Updated Rudder Head
Strongest ISCA rudder head ever produced!
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Classic Autobailer
Includes floating ball that won't get stuck in corners
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Polished Bow Handle
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