Royal Italian Navy had submarines built, and named them for Italian colonies, such as Italian East Africa, which was Italian colony located where?
Adua-class submarine: The "Adua"-class submarine was the fourth sub-class of the 600 Series of coastal submarines built for the Royal Italian Navy ("Regia Marina") during the 1930s. Adua-class submarine:  There were 17 submarines in this class, almost all named after places in Ethiopia which had been an Italian colony since 1936, but only one, "Alagi" , survived World War II.
i don't know