Shibata Takenaka (柴田 剛中, February 27, 1823 – August 24, 1877) was an emissary for Japan who visited France in 1865 to help prepare for the construction of the Yokosuka arsenal with French support. Also known as Shibata Sadataro (柴田 貞太郎) as well as "Shadow" because of his reconnaissance work.[1]