Cargo rice belongs to the Indica (long-grain) category, same as White rice. The only difference between these two varieties is the milling; milling removes both the husk and the bran layer of the kernel. Through the milling process, Cargo rice becomes White rice. As a result, in Cargo rice, only the husk is removed while the bran layer remains.
Because of the bran layer, Cargo rice contains more nutrients than White rice. In particular, Cargo rice is very high in fiber and vitamin B.