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Installation of structural support beams on the cabin top requires precise alignment and bonding to manage compression loads from the mast and traveler. The crew installs a centerline beam to prevent the forward bulkhead from pulling toward the mast under tension from halyards and winches.1:28 Before bonding, they run electrical conduit for lighting and solar wiring through the beams, using string to pull the lines through before the tubes are permanently fixed.7:26 They use methacrylate adhesive to bond the beams to the fiberglass cabin top, applying two large beads along the six-inch flanges to ensure full coverage and structural integrity.13:44 Jack stands provide upward pressure to hold the beams in place during the 90-minute curing window.15:20 After the beams set, the crew identifies a missing backing plate for the aft traveler support, necessitating a future cutout and repair.17:04 Proper preparation of the fiberglass surface by sanding and keying is essential for the adhesive to bond effectively.5:45

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