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About
Nash Marine currently has a dedicated Rainman Watermakers page describing modular systems, control panels, autoflush and watermaker operation.
Service area: Pittwater, Sydney and New South Wales
Nash Marine currently has a dedicated Rainman Watermakers page describing modular systems, control panels, autoflush and watermaker operation.
The relevant systems or brands are Rainman watermakers. The business advertises or is verified for Rainman watermaker sales; product advice; boat sales; equipment support. Its principal location for this directory is Princes Street Marina, 16 Princes Street, Newport NSW 2106, with practical coverage described as Pittwater, Sydney and New South Wales.
A marine watermaker is a reverse-osmosis desalination plant, not simply a filter. It draws seawater through an intake and pre-filter system, raises the pressure sufficiently for the RO membrane to separate fresh product water from concentrated brine, then sends the usable water toward a test point or tank. Production depends on seawater temperature, salinity, membrane condition, feed pressure and system design, so advertised litres per hour should be treated as a rated figure rather than a guaranteed output in every anchorage.
For a dealer or broader marine business, sailors should confirm whether the company only supplies the unit or can also organise installation, commissioning and after-sales service. The difference matters because watermakers need periodic filters, freshwater flushing, membrane care and troubleshooting, and a local technician familiar with the installed system can be more valuable than the initial purchase price.
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Output should be chosen from the crew's real daily water use rather than from boat length alone. Drinking and cooking may require relatively little water, while regular showers, washing machines, deck rinsing and liveaboard use can multiply consumption. A higher-output unit can shorten run time but may demand more AC or DC power. A low-energy DC system can suit a solar-heavy yacht but may need to run for many hours to fill the tanks. Owners should compare litres per hour, watts consumed, daily energy required and the capacity of the boat's battery, alternator, solar, inverter or generator system.
Installation space is equally important. Modular systems allow the membranes, filters and pumps to be separated around a machinery space, while framed systems can be easier to install and service when enough room exists. The intake should be located where it is unlikely to draw air or contaminated harbour water. The brine discharge needs a reliable route overboard. Filters, pressure gauges, flushing valves and membrane housings should remain reachable for routine maintenance rather than being buried behind permanent joinery.
Watermakers reward regular use and correct shutdown procedures. Seawater left stagnant inside a membrane system can create biological fouling, so freshwater flushing is important when the unit will sit unused. Longer lay-ups may require preservation or pickling using the manufacturer's specified process. Prefilters need routine replacement and should be checked more often in silty, plankton-rich or polluted water. Product-water quality should be monitored before water is diverted into the main tank, particularly after servicing or a long period of storage.
Owners planning remote cruising should ask which spares are sensible to carry. Typical items may include sediment filters, pump service parts, O-rings, belts or impellers, hoses and preservation chemicals, but the correct kit depends on the specific system. Membranes often last a long time when operated and maintained correctly, so replacing them simply because of age is not always necessary. Diagnosis should consider feed flow, pressure, temperature and water quality before assuming the membrane has failed.
Bathurst Harbour (Port Davey system), in south‑west Tasmania, is a vast, almost land‑locked estuarine harbour inside the Southwest National Park and World Heritage Area. It offers a remote, sheltered anchoring environment protected from the Roaring Forties, but demands careful planning, an awareness of marine‑reserve rules, and a willingness to operate in shallow, tannin‑stained waters. Best suited to experienced coastal cruisers and small expedition yachts prepared for self‑sufficiency, Bathurst Harbour is more a place to linger and explore on foot and by tender than a port of call for busy,
Local rules, marine‑park zoning and permit needs vary by reserve around South Australia’s coast — check the relevant marine park zoning map and SA Department for Environment and Water (DEW) information for the exact area before you go.
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Give everyone a simple, clearly defined role (helm, main trimmer, headsail trimmer, lookout/tactician and bow/lines), use short standard calls for manoeuvres, and keep communications positive and concise so the day stays safe and relaxed.
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Tasmania has a mix of state marine parks, local harbour bylaws and environmental protections that affect where and how you anchor—so check the specific area’s rules before you go, aim to use designated anchorages or soft seabeds, and follow standard anchoring and biosecurity good practice.
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Before your first sail in South Australian waters check the weather and tide, make sure the boat and safety equipment are fit for the trip, confirm local rules and any area-specific hazards, and tell someone your plan.
Explore →A practical guide to the coastal weather systems that affect sailing along Western Australia's coast, focusing on the Fremantle Doctor, local sea breezes, and linked coastal phenomena. Explains how these systems form, when they tend to occur, how they influence boat handling and passage planning, common mistakes, and a
Explore →A practical guide for recreational sailors on using VHF marine radios safely and effectively in Australian waters: basic operation, channel use, emergency procedures, DSC basics, common mistakes and a ready checklist for pre-departure and on-water use.
Explore →Practical guide for recreational sailors planning passages, anchorages and visits to Ningaloo Reef and the Exmouth coast. Covers anchoring considerations, marine park rules and how local weather, tides and currents affect safety and enjoyment.
Explore →A practical guide for recreational sailors planning visits to Albany and King George Sound. Covers the main anchorage areas, typical local weather patterns, tidal and current considerations, navigational hazards, on-the-water etiquette and a pre-departure checklist to help you plan a safe passage and enjoyable stopover
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A one-membrane modular marine watermaker with 80 L/h nominal output, remote stainless control panel, standard consumables and direct Australian support.
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A three-membrane modular watermaker with 200 L/h nominal output and up to 240 L/h family-level marketing, for larger crews and heavy use.
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A two-membrane modular watermaker with 140 L/h nominal output, aimed at families and liveaboards that want more water per run.
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A 10‑year battery EPIRB with integrated GNSS (supports GPS and Galileo), infrared strobe and 121.5 MHz homing signal. Approved for worldwide COSPAS‑SARSAT operation.
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