a watercraft support structure formed from a plurality of rigid platforms that are coupled together by the use of linking pins or insertion plugs . each platform having independent buoyancy formed integral therein for support of most any size watercraft . the structure includes multiple ramp , cradle , and flat platforms , allowing an individual to customize a support structure for a particular sized watercraft . the platforms allow the structure to raise or fall with each tidal change . one embodiment of the dock assembly 110 includes a hinge - type connection that promotes ease of loading and unloading of a watercraft . the dock assembly 110 may also be configured to provide a surface to which watercraft may be moored .