Abstract: It has been found that there are a multitude of significant advantages associated with modular floating deck structures which are comprised of at least one deck section which includes a frame having float drums attached to the bottom side thereof and a deck which is attached to the top side thereof, wherein the frame is comprised of structural boards which are comprised of certain fiber reinforced plastics. Such modular floating dock structures are strong, light-weight, highly durable, extremely resistant to corrosion and decay, and can be easily assembled from prefabricated sections. They also have the ability to rise and fall to meet changes in water level. They are superior to conventional floating dock structures in that they are highly resistant to corrosion and decay and accordingly provide greatly improved reliability and an extended service life.