系统与操作指南
Watermaker basics for cruising yachts
Reverse-osmosis watermakers on yachts — output, power draw, pickling, and when marina water is simpler.
Overview
A watermaker produces fresh water from seawater via reverse osmosis. Output is typically 20–60 litres/hour on cruiser installations — enough to top up tanks on passage, not unlimited showering.
Operating costs
| Factor | Notes |
|---|---|
| Power | High DC draw — often run with engine alternator |
| Filters | Pre-filter and membrane life depend on water quality |
| Pickling | Chemical preservation when idle weeks — follow manual |
When it pays
Long anchor-heavy cruises in remote areas justify complexity. Baltic summer with cheap marinas often favours tank + shore hose — see watermaker vs marina water.
Cross-read freshwater plumbing and energy budget.