Fish Under Sailvideo

Repairing a Crack in the Keel — This Had to Work

July 25, 2026 · 22 min · 2K views · Puerto Madero, Tapachula

What this video covers

Natasha and Kyle perform a structural keel repair and complete the final pilot house window installation on their boat while anchored in Tapachula.1:26 To address a crack in the keel, they grind out a V-shaped channel, drain water-filled voids, and fill the gaps with thickened epoxy.5:42 They then apply multiple layers of fiberglass mat using limited supplies, including standard epoxy and brushes, while working in high-wind conditions.14:04 The repair process involves trial-and-error layering, sanding, and tapering to ensure structural integrity despite a lack of specialized fiberglassing tools or slow-cure hardener.10:42 Simultaneously, the crew finishes sealing the last of the pilot house windows using butyl tape and SikaFlex, overcoming issues with frame corrosion and rapid sealant curing times in the heat.3:59 The project concludes with the final fiberglass layers applied to the keel and the repair of a secondary blister.19:35 Structural repairs with limited resources require careful preparation of the substrate and iterative layering of fiberglass to achieve a solid, cured finish.

Watch on YouTube

Boats in this video

Nauticat 43Their boat

More from Fish Under Sail

*Channel Update* - Big Things Coming, but First Going QuietSep 20268 Months of Hell — Splashing Sand Dollar at LastAug 2026Will the Engine Start? First Test after Hydrolock RebuildJul 2026What is Leaking from our Keel??Jul 2026

From Fish Under Sail — see the channel’s boat, crew, and every analyzed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.

Report an issue