Sailing SV Delos · video

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The crew of an aluminum catamaran build opts against traditional marine paint for the hull, citing high costs, extensive surface preparation, and long-term maintenance concerns.▶ 0:51 Painting an aluminum vessel requires fairing the metal to hide welding imperfections, a process estimated to cost between $100,000 and $150,000 AUD and requiring at least three months of labor.▶ 16:45 The team notes that paint systems are prone to flaking and oxidation at sharp edges or deck fittings where moisture intrusion occurs.▶ 1:08 Instead, they apply Nyalic, a clear polymer coating that protects the raw aluminum from oxidation and streaking without requiring the extensive fairing needed for a glossy finish.▶ 12:15 To manage rainwater runoff and prevent hull streaking, they installed solid toe rails that channel water to the aft.▶ 11:41 While the exterior remains unpainted, the crew paints the engine room bilges to prevent galvanic corrosion from stray tools or stainless steel components.▶ 7:40 The project also includes installing tempered glass salon windows and completing AC and DC wiring runs.▶ 2:51

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