Perry in Tokyo Bay
The famous "Black Ships" commanded by American Commodore Matthew Perry steamed into Edo Bay (now known as Tokyo Bay) in 1853, the first Western ships to enter Japan in more than 200 years. The Black Ships were the literal "gunboats" in Perry's "gunboat diplomacy," which forced Japan to open her ports and trade with the West.
Painting by Kinuko Y. Craft, National Geographic