Australia's Windthrust has revealed what it hopes will be a revolutionary design for the growing wind warm installation market.

The subsidiary of National Ports Corp said its "floating port" installation ship, Oceandock LX, has 60,000 square metres of deck space, two 2,600-tonne-capacity cranes and another of 6,000 tonnes, which can lift a substation in one go.

Design images supplied by the company show a ship that appears to be three hulls joined together.