Three sail shape controls which control the leech tension, and therefore sail twist, are the mainsheet, the boom vang and the traveler.
Tempest 23 came standard with eight foot (8') Self-bailing cockpit, self-draining seats with storage, molded insulated ice box,Philippine mahogany trim, deck stepped mast, main roller reefing, full width mainsheet traveler, wirehalyards, two jib winches, separate galley and head enclosures, two (2) 6'6" berths with storage, and a 2 year warranty.