Nauti-Tech Systems is

The North American master dealer for Marpower Power Converters

Marpower Power Converters are light, compact, robust, and have a high efficiency. Marpower Power Converters have been the most trusted converters used in international yacht building for years. The reliable Shore Power Converter is cost effective and has the highest power density.

Marpower converters offer:

  • Small and compact systems
  • Choice of air cooling and hybrid water cooling
  • Galvanic insulation for optimum safety
  • Modular construction
  • Seamless transfer function
  • Energy storage inverter for peak shaving and energy efficiency
  • Easy installation
  • Easy maintenance & repair 
  • Global service and support


Amels, Damen, Feadship, Hakvoort, Heesen, Holland, Jachtbouw, Moonen, Royal Huisman, Vitters, Baltic Yachts, CMB, Nereids, Sunrise, Turquoise, Abeking & Rasmussen, Lurssen, Gulf Craft, Sunseeker, Pendennis, Palmer and Johnson, Timmerman Yachts, Arno Shipyard, Azimut Benetti, Baglietto, Cerri Cantieri Navali, Codecasa, CRN, Isa, Mondomarine, Overmarine, Perini, Rossi Navi, Rossini, Sanlorenzo, Tecnomar, and many more...


SPC-II Shore Power Converter

World’s smallest and lightest Shore Power Converter

Up to 25% smaller than a transformer

Up to 45% less weight

Air cooled

Galvanic isolation for optimum safety

Modular construction

Full seamless transfer

Easy installation

Worldwide service and support

Optional active harmonic compensation

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SPC-II Hybrid

SPC-II HYBRID Shore Power Converter

Almost twice the output power compared to the standard SPC-II

Hybrid cooling: air and water

Small size: up to 50% reduction compared to a transformer

Low weight: up to 65% reduction

Easy installation

Galvanic isolation for optimal safety

Modular concept

Seamless transfer function

Worldwide service and support

Optional: active harmonic compensation

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ESI Energy Storage Inverter

World’s smallest and lightest Energy Storage Inverter

Bi-directional energy flow

Galvanic isolation

Parallel operation with generators



Passive and active harmonic compensation

Fit for new build and for re-fit market

Worldwide service and support

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