Freshwater independence is one of the biggest upgrades you can make to any cruising vessel. A portable watermaker removes the stress of rationing, reduces weight, and gives you the freedom to explore remote Australian coastlines without planning around marinas or jerry cans.
Why Portable Watermakers Matter for Australian Boaters
Australia’s coastline is stunning — and massive. Distances between refills can be huge, temperatures are high, and conditions can be harsh. A reliable watermaker prevents freshwater limitations from cutting trips short.
Portable units are particularly well-suited to:
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Sailboats under 40 ft
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Trailer boats doing multi-day trips
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Fishing vessels in remote areas
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Liveaboard cruisers needing daily water production
What to Look For in a Portable Watermaker
1. Power Source (12V vs 240V)
Most small vessels prefer 12V units that run from onboard batteries or solar.
240V watermakers typically require generators or heavy inverters.
2. Reverse Osmosis Membrane Quality
Choose systems with high-quality membranes designed for marine salinity and warm water.
3. Pump Type & Build Materials
Look for stainless steel pumps, marine-rated seals, and efficient high-pressure systems.
4. Real-World Output (Not Lab Numbers)
Expect ~20–30 L/hr for compact portable units in Australian water temperatures.
Portable vs Installed Systems
Installed systems are great for larger yachts but add cost, weight, and complexity. Portable systems:
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Require no installation
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Can be moved between vessels
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Are easier to service
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Have a lower upfront cost
Scout SW20 vs Rainman vs Spectra
A simplified comparison:
| Feature | Scout SW20 | Rainman 12V | Spectra Portable |
|---|---|---|---|
| Output | ~20 L/hr | 30–35 L/hr | 17–25 L/hr |
| Weight | Low | High | Medium |
| Power | 12V | 12V/240V | 12V |
| Build | Stainless steel pump | Mixed | Composite |
| Australian-built | Yes | Yes | No |
View full Scout SW20 specs:
https://lediwatermaker.com/products/scout-sw20
Maintenance and Operating Costs
Portable watermakers have straightforward upkeep:
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Pre-filter changes
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Freshwater flushing
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Occasional membrane preservation
Who the Scout SW20 Is Best For
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Remote coastal cruisers
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Trailer boats
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Sailors wanting low-energy desalination
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Anyone needing a lightweight, Australian-built 12V unit
FAQ
How much water does a portable watermaker produce?
Most produce 15–30 L/hr depending on conditions.
Do I need a generator?
Not with a 12V unit like the Scout SW20.
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