Aerial view of a sailboat underway on open water
Watermakers

Four systems, one job: reliable water offshore.

Every Open Ocean system is built from non-proprietary parts with hands-on controls, whatever powers your boat. Pick the drive type that matches your setup below, or talk to Pete if you're not sure.

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.

Engine-driven pump installed 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 See system →
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 See system →
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 See system →
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 See system →

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 →
How It Works

Reverse osmosis, in three steps.

The same core process across every drive type - only how the pump is powered changes. Read the full overview →

01 · Pressurisation

Seawater is pumped at high pressure across a semi-permeable membrane.

02 · Separation

The membrane passes pure water through and blocks salts and solids.

03 · Result

Contaminants wash away as brine, leaving fresh water comparable to rainwater.

Flushing

Manual flush is standard on every system. Automatic flush is available for unattended vessels.

Built From

Proven parts, not proprietary black boxes.

Every component is chosen to be serviceable anywhere in the world, not just from us. More about our components →

Membranes

Carbon Fibre Membranes

Engineered and machined in New Zealand. Custom carbon fibre tubes with high-density thermoformed end caps, fully corrosion-resistant.

Pumps

High Pressure Pumps

Industry-standard for watermakers. 316 stainless steel body and ceramic pistons, engineered specifically for saltwater longevity.

Fittings

Standard BSP Fittings

Threaded fittings and hose tails, deliberately not push-fit, so replacements are available anywhere in the world.

80 L/h
One membrane
160 L/h
Two membranes
240 L/h
Three membranes

Engine-driven and AC systems. The 12/24V DC High-Output system makes 70 L/h.

Installation

Most installs are within reach of a handy owner.

Every system comes with a full installation and operation manual. Electric models are the simplest to install. Engine-driven models need a bracket to mount the pump on the engine. Most installs can be done by a handy owner or any competent yacht service, but electrical connections should always be made by a qualified electrician.

Open Ocean membrane housing product shot

Parts, filters and spares - shipped worldwide.

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

Browse the shop →