EntityQ240985· pop 11· linked from 429 articles505Sign in to saveinternational racing sailing classConnectionsWorld SailingEntitydinghy sailingEntityAustraliaCountryUnited KingdomCountrySwitzerlandCountryOlympic GamesConceptLa Baule-EscoublacEntitymastEntitycatamaranEntityX-15EntitydraftEntityhullEntitysailing at the Summer OlympicsEntityOptimistEntitytrimaranEntitysparEntitydinghyEntity49erEntityspinnakerEntitymainsailEntityCategories1950s sailboat type designsClasses of World SailingDinghiesSailboat types built by Clark Boat Company