For Yacht Builders, Buyers, and Owners

What If Solar Won't Keep Up On a Cloudy Day?

Sailors relying on solar arrays face power shortfalls on cloudy days, prompting the need for a reliable backup. A DIY diesel‑engine‑alternator setup can supply 110 V but adds weight and duplicates the propulsion engine. The author proposes fitting a high‑output alternator with a simple clutch to the existing engine, delivering efficient charging without under‑loading. This solution leverages off‑the‑shelf parts, keeping cost and mass lower than wind turbines or dedicated gensets.