Designers often ask what makes independent tanks so interesting. For the answer it is best to look at the current designs. These are the well-known standard chemical parcel tankers with duplex tanks and corrugated bulkheads, and, typical for this design, the tanks are adjacent to each other and to the ballast tanks. This positioning has some major disadvantages, such as major heat loss when a tank is heated - if you heat your cargo you are also heating the adjacent cargoes and the ship itself. As a consequence a lot of heating coils and a high temperature are needed to maintain the desired temperature of the cargo. The high temperature of the heating coils can be very disadvantageous for the cargo quality.
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