The voltage required for direct current (DC) can vary considerably onboard a yacht. A bow thruster or a winch installation often works at 24V. But navigation and communication equipment mostly requires 12V.
By using a DC-DC converter other voltages than applied in your basic system can be reached. They also ensure that all your onboard equipment has a stable power supply with the right voltage. The Mastervolt DC-DC converters will be converting for comfort.