Aerial view of a sailboat underway on open water
Marine Watermakers · Since 2001 · Tauranga, NZ

Marine watermakers you can understand, service and trust.

Trusted water, wherever you are.

Simple manual controls, standard parts you can buy worldwide, and carbon fibre housings made in New Zealand. Built to keep running long after you leave the dock.

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Why Open Ocean

Simple by design, and built to be fixed anywhere.

Our founders designed the first system after twelve years of offshore voyaging, where high-tech parts were usually the first thing to fail. We still build them the same way.

Simple manual controls

You run it with switches and valves. You can see what the system is doing, and there are no surprise cycles or error codes.

Parts you can find anywhere

Standard pumps, fittings and membranes, sold by hardware stores and industrial suppliers worldwide.

Made in New Zealand

Carbon fibre pressure housings and end caps, made in New Zealand, with a 5-year warranty.

Talk to the people who build it

You'll talk to someone who has installed a watermaker, not a call-centre script.

More power, fewer things to go wrong.

Our systems draw more power than energy-recovery designs. That's on purpose: a simple high-pressure pump and a manual valve leave less to fail offshore.

Our Technology

Two things we're known for.

Engine Drive pump belted to the engine in an engine bay
Engine Drive

Water from the engine you're already running.

The high-pressure pump runs off a belt and electric clutch on your main engine or generator. It makes 80 to 240 litres an hour without drawing heavily on your batteries. Terry sea-tested the original prototype for five years before finalising the design.

115 L/h carbon fibre vessel

High output from one short vessel.

Our short-format carbon fibre vessel makes 115 litres an hour from a single 4" x 21" membrane, in a housing 690 mm long. It suits cramped engine rooms where a full-length vessel won't fit, and fits our Engine Drive and AC systems.

Open Ocean carbon fibre membrane housing
Complete Systems

Four ways to make water, matched to how your boat is powered.

Engine-driven and AC systems scale from one membrane to three - 80, 160 or 240 litres per hour - by adding capacity, not complexity. Compare them side by side →

Engine Drive pump belted to the engine in an engine bay
Engine-Driven

Mechanical Clutch Drive

80-240L/h

Runs off your main engine or generator via electric clutch. Converts motoring time directly into fresh water without drawing heavily on your batteries.

From NZ$11,880 + GST Get a quote →
AC system control panel and pump installed
AC · 120/240V

Direct-Coupled Electric

80-240L/h

For boats with a 4.5kW+ generator. The simplest install of the range, run at ideal recovery ratios for long membrane life.

From NZ$13,090 + GST Get a quote →
Brushless DC pump and motor assembly
DC High-Output · 12/24V

Brushless DC Motor

70L/h

Solar and wind ready for boats with 1000W+ arrays. Runs off battery, alternator or generator with a weatherproof brushless controller.

From NZ$14,960 + GST Get a quote →
Compact skid-mounted land-based system
Land-Based & Custom

Off-Grid Property Systems

Customspec

The same reliable core system, adapted for baches and remote properties without mains water. Dual high-pressure pump options available.

Priced on application Get a quote →

Quencher - cabin control

An electronic panel operates from the main cabin. You flip the switches yourself, so there are no surprise cycles or error codes - just two hoses running to wherever you want the panel.

Flush-mount the panel in your cabinetry, or surface-mount it on the optional stand-off bracket. See the layout →
Since 2001

Reliability through simplicity.

Terry and Ariel Forsbrey built the first Quencher system after more than twenty years living aboard and cruising offshore. Twelve years of active voyaging taught them that high-tech components weren't just unnecessary - they were usually the first thing to fail.

"The problem with those systems is that there are a vast quantity of standards and styles, so they are not available world-wide."

Terry sea-tested an engine-driven prototype for five years before finalising the design. After twenty years serving the global sailing community, Terry and Ariel have stepped back - new ownership continues the same "pure and simple" philosophy today, proudly built in Tauranga, New Zealand.

2001
Founded in the Bay of Islands, NZ
5 yrs
Sea-testing the original prototype
BSP
Standard fittings - serviceable anywhere in the world
In Their Words

What customers say after the water starts flowing.

"The watermaker has been working flawlessly, and we are very pleased with the water production."

Open Ocean customer

"I am stunned at the way it pours out. Just thinking, if I could get gin to come out…"

Open Ocean customer

"Not only was the price reasonable, but the performance has exceeded our expectations."

Open Ocean customer

Outside New Zealand, or a marine business?

We ship worldwide, quote to your destination, and help your installer through the job. Dealers and installers welcome.

Open Ocean membrane housing product shot

Parts, filters and spares - shipped worldwide.

Membranes, pre-filters, storage chemicals and panel hardware for Open Ocean systems.

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