One Design Parts

Fiberglass daggerboard for the ISCA sailboat. This is the standard for all racing sailors.  ISCA Daggerboard Fiberglass Construction Zim Sailing Part # 48107   This is an official International...

These 12 inch die-cut sail letters have a sticky adhesive on one side that will bind them to the sail. Once applied and set, the numbers will be able to withstand the elements of sailing without...

Official class approved lower racing boom for the ISCA sailboat. This is our 'Race' spec boom and includes Harken Carbo blocks in place of the traditional Racelite blocks for higher performance. Also...

Official class approved lower boom for the ISCA sailboat. Designed for the club or recreational sailor, this lower boom includes end caps and standard Racelite mainsheet blocks. ISCA Lower Boom...

Official class approved upper boom for the ISCA sailboat. This upper boom includes end caps and is standard on all Zim ISCA Race and Club sailboats. ISCA Lower Boom Includes end caps Aluminum...

Rudder Cheek for the ISCA sailboat. This is an updated design found exclusively at Zim Sailing, offering stronger, more durable plastic for long life. Includes pintle pin and spring.  Rudder...

Standard class legal mast for the ISCA sailboat. Includes mast top cap and bottom cap.  Freight Shipping - This is an oversized item that requires freight shipping or in store pickup from our...

Official replacement bailer cap for ISCA sailboats. This is the 'short' style 13/16 inch cap found commonly on boats produced since 1972 and standard on all new Zim ISCA sailboats. This is the cap...

Standard 2 loop traveler bridle for ISCA sailboats. Made from a marine grade stainless wire with vinyl coating for long life. Attaches to traveler fairleads and provides a place for tying off or...

Replacement metal bow handle for ISCA sailboats. Mounted to the bow of the ISCA, the bow handle provides a handy lift point for your boat and place to tie off a line. Mounts to the deck with screws...

Replacement bailer o rings for ISCA sailboats. The o ring helps to provide a watertight seal between the bailer and the boat, preventing leaks. Sold as a 5 pack and a great item to keep in your spare...

Replacement boom block with swivel for ISCA sailboat booms. This is the standard Race Lite version. ISCA Boom Block w/ Swivel Zim Sailing Part # 48160   This is an official International Sunfish...