Abstract: A containerized portable shelter which is small and light enough for helicopter transport but which can also travel through container channels and has increased expandability of the floorspace is provided. It has a fraction (e.g. one-half) the standard ISO width, so that a plurality of modular units can be joined to form a standard ISO container. Two or more modular units can be joined side-by-side and/or end-to-end to form a compound shipping container preferably having ISO freight container characteristics.

Abstract: A portable collapsible shelter is provided which collapses into a standard ISO shipping container which can be handled by self-loading vehicles and which can be expanded to form a shelter by providing fold-down side walls which extend the floor space of the container and a cover to enclose the extended space.

Abstract: Currently portable industrial camp shelters will be either wood frame construction or fabric tents. The former have restriction on size and require special skills and equipment to install on site. The latter require plumbing and electrical installation to be installed on site. The present invention combines the advantages of frame structures and tents in a portable collapsible shelter by modifying standard shipping container structures to provide fold-down side walls which extend the floor space of the container and are provided with a retractable fabric cover to enclose the extended space.