what are the types of the last one?
Other than the standard, general purpose container, many variations exist for use with different cargoes, the most prominent of these are refrigerated containers
Intermodal container
Other than the standard, general purpose container, many variations exist for use with different cargoes. The most prominent of these are refrigerated containers (a.k.a. "reefer"s) for perishable goods, that make up six percent of the world's shipping boxes. 
what is ss mauna loa? A steam-powered cargo ship what is the use of this type of ship? Such ships are a merchant ships that carries cargo, goods, and materials from one port to another. what are the other ways to transport the cargo? Rail, van, truck, or intermodal container
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Intermodal container [SEP] Types
Other than the standard, general purpose container, many variations exist for use with different cargoes. The most prominent of these are refrigerated containers (a.k.a. "reefer"s) for perishable goods, that make up six percent of the world's shipping boxes. And tanks in a frame, for bulk liquids, account for another 0.75% of the global container fleet. Although these variations are not of the standard "type", they mostly are "ISO standard" containers – in fact the ISO 6346 standard classifies a broad spectrum of container types in great detail. Aside from different "size" options, the most important container types are: Containers for Offshore use have a few different features, like pad eyes, and must meet additional strength and design requirements, standards and certification, such as the DNV2.7-1 by Det Norske Veritas, LRCCS by Lloyd's Register ,Guide for Certification of Offshore Containers by American Bureau of Shipping and the International standard ISO10855: "Offshore containers and associated lifting sets " ,in support of IMO MSC/Circ.