About Pressure Washers for Boats
For gel coat and hull washing, 110–140 bar at 8 L/min is the sweet spot. Avoid turbo nozzles which can dull and pit gel coat. Stay 30 cm+ from antifoul to avoid stripping the coating.
Top picks: Kärcher K5 Premium, Nilfisk Core 140 (occasional), and Kärcher HD 5/15 (marina-grade for trade). A petrol washer is essential for moorings without electricity.
Always rinse with fresh water before pressure washing to remove gritty salt, then follow with a marine wash and wax to seal the surface.