Garrett’s Adventurevideo

Fixing 87 Osmosis Blisters on my Sailboat

August 6, 2026 · 20 min · 33K views · Gold Coast

What this video covers

Garrett repaired 86 osmosis blisters on his 40-foot Hans Christian monohull while hauled out at a boatyard on the Gold Coast, Queensland, Australia.0:41 After purchasing the vessel at a discount due to the condition, he opted against a full hull strip-back because the yard lacked a hot-vac machine to properly dry the laminate.4:30 Instead, he and a team of four used angle grinders to open all significant blisters, confirming that none had caused deep structural delamination in the one-inch-thick hull.2:27 The team cleaned the cavities with water and MEK, filled them with epoxy and fiberglass, and faired the surface with micro-bubbles.11:14 After applying a barrier coat and three layers of bottom paint, the boat returned to the water.18:38 The three-week project cost approximately $4,000.18:54 While minor cosmetic blisters remain, the hull is structurally sound and seaworthy.20:17

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Boats in this video

Hans Christian Christina 40Their boat

More from Garrett’s Adventure

Running my Sailboat VERY agroundMay 2026Sailing to and Exploring Remote Islands on Australia's East Coast NSWApr 2026Living on a Sailboat in SydneyApr 2026Sailing to Sydney Harbour + First Solo Sail on my New BoatMar 2026

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