How It Works

Graphic representation of system in sailboatHaveblue is independent of energy production and distribution infrastructures because the entire process occurs onboard the vessel, utilizing reliable, “off-the-shelf” systems and equipment. Here is a basic description: 


  • A marine vessel obtains water from where it happens to be afloat (if necessary, it can also obtain water from a public utility).
  • A standard water purification device processes the water to the required level of purity. (Some hydrogen generation devices do not require such processing.)
  • An electrolysis unit produces hydrogen and oxygen from the purified water.
  • The hydrogen is stored as compressed gas or in metal hydride tanks. (“On demand” hydrogen generators, when they become available, may also be used.)


  • Hydrogen-consuming fuel cells (working with the vessel’s battery bank, much like in a hybrid automobile) produce electricity for onboard needs and/or propulsion
  • An internal combustion engine burns the hydrogen to produce power for propulsion and/or to generate electricity for onboard needs and/or propulsion.


  • Renewable energy sources such as solar, wind, and/or a vessel’s regenerative electric motor primarily power the production and storage of hydrogen while the vessel is at rest and/or underway.
  • Shore-power and power from high-output marine alternators can also be used.

HaveBlue can be configured to produce the energy needed to power a vessel’s propulsion and “hotel” energy needs, just service its “hotel” needs, or help marine vessels reduce their emissions by injecting hydrogen into their fossil-fuel combustion processes.

More information can be found on the Frequently Asked Questions page. Please feel free to contact us to discuss specifics (such as energy gains and losses) in this process.