nordex n90 offshore based on the nordex n90, we have developed an offshore variant for use at sea. the principal differences to the n90 onshore machine are - facilities for corrosion protection and dehumidification - meta......nordex n90 offshore based on the nordex n90, we have developed an offshore variant for use at sea. the principal differences to the n90 onshore machine are - facilities for corrosion protection and dehumidification - metal cladding and redesign of the machine housing - integration of the transformer and the frequency converter from the foot of the system to the nacelle - redundant and automatic cooling system - technical facilities for service at sea.