Abstract: A pontoon boat, of the type having two pontoons upon which is erected a platform and railing, for use as a shallow draft vessel, is shown having the platform and railings contructed of a particular collapsible construction specifically adapted for rapid, complete and compact disassembly for ease of over-the-road transportation. Each pontoon is constructed of two end-to-end canoe shaped flotation structures having a perpendicular end for abutment and bolting together, and a tapered end for lessening water drag. On a flat top of each pontoon, mating left and right receiving support points hold the collapsible platform frame. Two indentical, facing collapsible platform frames have pin and socket connections for interlinking with the pontoons, and have a removable floor plate which rests in a hinged bottom support frame. The bottom frame and two hinged side rail sections fold against a fixed back rail.