Abstract: A cargo securing system for steel coils, for example, includes, on a supporting platform, two parallel spaced tracks and coil supporting chocks slidably mounted thereon. End chocks are selectively fixed to the tracks to support one end of a coil, while adjustable chocks are slidable to a position to support another end. The adjustable chocks are operably connected to anchors, which are selectively fixed to the tracks, for securing movement against a coil end, and for prevention of subsequent movement along the tracks. Multi-intermediate chocks permit securing multiple coils of different sizes by supporting the adjacent ends of two coils intermediate the end chocks and the adjustable chocks. Storage track sections permit pivoting of the chocks to a storage position to convert the platform to flat-bed use when desired. An "I"-beam chock retainer is provided for cooperation with a particularly defined track.