Abstract: A float device of particularly low cost, having a wide range of application. It utilizes a waste tire with a mass of foamed resin or other porous material filled therein to form an annular float and includes a body structure secured to the float in closely fitting relation thereto and provided centrally with hook means to enable cable or rope connection of the device to an anchor or a hurdle or raft for fishery use. The body structure also has an annular disc portion on which a light device as an aid to navigation or other object can be stably mounted, as required.