Sailing SV Delosvideo
OUR MAST: The INCREDIBLE Process! (EXTENDED CUT) Building Our Own Aluminum Catamaran Pt. 87
18 de septiembre de 2026 · 49 min · 348K vistas · All Yacht Spars, Australia
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A 21.2-meter (70-foot), 328-kilogram aluminum mast for a custom catamaran build takes shape at All Yacht Spars in Australia, and Brian documents the full design and fabrication process.2:56 The mast — roughly a seven-story structure above deck, reaching about 80 feet off the water when the VHF antenna is included — is built from 6005-T6 aluminum extruded in Melbourne in two sections of 12–14 meters each for transport, then joined and fabricated at the workshop.8:05 The extrusion process starts with solid aluminum billets heated to approximately 500°C, pressed through a custom die, stretched straight, and shipped to the spar shop.18:28 Design was a three-way collaboration between Brian, Joel at All Yacht Spars, and Doug at Quantum Sails, who ran loads through their Sail IQ software across multiple wind speeds and sail configurations; mainsheet loads run roughly 1.5–2 tons, with mast compression measured in multiple tons.13:25 The 100-square-meter mainsail plan came from designer David; mast-specific decisions — spreader lights fore and down, radar on the first spreader, tricolor and VHF at the top, mast steps at the sail pack and masthead, an up-the-mast self-tacker informed by Fabio's Seawind 1600 rig, and a code zero on a two-to-one purchase — were specified by Brian after consulting catamaran sailors across a range of boats.6:08 Carbon was rejected as too expensive and difficult to repair for an expedition cruiser.11:30
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