Flagship vs. Essentials: Which Modular Watermaker Fits Your Cruising Style?
- Jan 30
- 2 min read
At Pure Ocean Marine, we understand that no two boats—and no two budgets—are the same. While all our systems are designed to withstand the harsh marine environment, we offer two distinct ranges of modular watermaker solutions: the flagship MM Series and the essential SE Series.

Both systems solve the "space squeeze" on board by allowing you to install components separately (pump in the engine bay, control panel at the nav station). However, they cater to different needs. Here is how to decide which boat watermaker is right for your vessel.
The SE Series: Pure Utility and Simplicity

The SE Series Basic Modular range was engineered for one purpose: to provide a robust, lower entry point into freshwater independence. We stripped away the non-essentials to create a clean, practical system that just works.
Simplicity First: The SE Series focuses on straightforward operation. It is designed for owners who prefer mechanical reliability over digital complexity.
Cost-Effective: By focusing on the essentials, the SE models (like the SE80 and SE140) offer high-quality freshwater production at a price point that makes sense for coastal cruisers and weekend sailors.
Easy Ownership: With standard components and a layout designed for clear access, watermaker maintenance is intuitive. It is the perfect choice for the "hands-on" sailor who wants a system they can easily understand and service themselves.
The MM Series: The Premium Flagship

If the SE Series is the workhorse, the MM Series Modular Watermaker is the thoroughbred. As our flagship range, the MM Series incorporates advanced technology and engineering refinements designed for heavy use and maximum comfort.
Quiet Operation: One of the key differentiators of the MM Series is the focus on noise reduction. Engineered for smoother running, it is the better choice for liveaboards who might run the system while the crew is resting.
Wider Capacity Range: While the SE Series covers the core needs (80–140L/h), the MM Series scales up to meet the demands of larger yachts, offering capacities from the MM80 all the way up to the MM300.
Advanced Build: Designed as a premium reverse osmosis watermaker, the MM Series features upgraded materials and a design aesthetic that matches modern, high-tech engine rooms.
Which One Should You Choose?
Choose the SE Series Basic Modular if:
You want a reliable system with a lower initial investment.
You appreciate "analog" simplicity and want to avoid complex electronics.
You have a sailing boat or powerboat used primarily for coastal cruising or seasonal trips.
You view marine watermakers as a functional tool rather than a luxury appliance.
Choose the MM Series Modular Watermaker if:
You are a full-time liveaboard or planning long-distance blue water cruising.
Noise levels are a critical concern for you and your crew.
You need higher water output (above 140L/h) for a larger crew or appliances (like washing machines).
You want the highest standard of finish and technology available in a modular format.
Conclusion
Whether you choose the value-focused SE Series or the premium MM Series, you are getting the core Pure Ocean Marine promise: flexible installation and dependable water. Both ranges use standard parts to ensure that wherever you sail, you are never left without support.



