She is the second and final ship of her class.
It was the only ship of its class to be built.
Ten ships of the class were lost during the war.
Three other ships of the class followed the next year.
By 2007, three more ships of this class were on order.
In total 20 were made, starting with I-15, the class ship.
Between 1985 and 2001, 34 ships of this class were built.
All ships of this class are named for important women in history.
She was the second and last ship of her class to be completed.
She was the lead ship of her class and commissioned in 1930.
