Yo creo que lo de los relés debe funcionar ya que el fabricante vende un "inversor" como complemento.(si lo entiendo bien)
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SUBMARINER REVERSING CIRCUIT
Provides a means of reversing windlass from a variety of owner designated stations while maintaining a safety electrical interlock that will prevent a short circuit. This might ordinarily result when multiple operators at multiple operation stations, such as; cockpit remotes, deck switches, or roving remotes, operate the windlass in opposing modes. In the event multiple operators simultaneously activate opposing directions the windlass instantly shuts itself off and waits for another instruction. The submariner reversing circuit overall size measures 11 ½" X 9 ½" X 5". Enclosures are manufactured of fire retardant, self-extinguishing fiberglass and are provided with four compression gland lock connectors. The units also come with one 6-foot pigtail harness, terminated at a stainless steel barrier strip for under deck connections. Contactors are 400 amp, continuous duty 4 pole type with silver contact surfaces. The submariner reversing circuit also serves as a central junction terminal for all accessories and remote stations that Lighthouse manufactures. The unit may also be located anywhere in the vessel for ready accessibility."
me imagino que debe de ser algún tipo de relé.
Lo que tengo que ver es si me sirve algún relé que pueda comprar aquí en España