Everyone has a favorite piece of gear on their boat. Aboard our Hunter 44DS, Groovy, my husband, Mark, and I certainly have a fond spot for our radar-integrated chart plotter. But we both agree there's nothing we love more than our watermaker. Before our nearly four-year cruise of Mexico's Pacific coast and Sea of Cortez, Mark installed a high-capacity, engine-driven EchoTec 900-BML-2 watermaker, manufactured in Trinidad, that is officially rated to produce 38 gallons per hour. Cruising where water temperatures topped 75 degrees, our watermaker consistently produced a whopping 60 gallons per hour. How pure was it? Fresh water is rated by "total dissolved solids" (TDS), and drinking water is generally 500 ppm (parts per million) or less. We measured San Diego's tap water at 350 ppm and commercially bottled water at 6 ppm. In the tropics the agua from our watermaker was between 75 and 95 ppm.