The mast is made up of high-modulus carbon-fiber on which largest JClass yacht will be sailing. The mast has four sets of inline spreaders plus jumpers. Shroud tension is adjusted via Hall’s Brick House internal adjustment system. All headsails are fractional, and the genoa uses a roller furling system. There is an inner forestay, which is easily removable with halyard lock system. There are two main halyards and a line to the masthead, two fractional headsail halyards, and one halyard above the inner forestay.
The majority of mast parts are also constructed from carbon fiber, including the spreader bars and sheave boxes. Even the support for the masthead wind indicator is molded from autoclave-cured carbon fiber. There’s no vang. Preventer lines are installed inside the boom at three locations. The interior will be lightweight classic paneling. Crew mess and gallery are integrated below decks. The spinnaker pole is very large. The 17m double-taper pole uses a track system on the mast for dip-pole jibing.
Lionheart is one of four Starling Burgess/Olin Stephens designs tank-tested in 1936 for Harold Vanderbilt’s America’s Cup syndicate.
