Some of the examples of man-made streamlined bodies are:
Airplanes are man-made streamlined bodies that are rounded in the front and narrow at the back by virtue of which they experience the least air friction and consequently high speed.
Missiles and rockets are man-made streamlined bodies that move at a very high speed due to their streamlined body.
Ships are man-made streamlined bodies that travel fast in water due to their streamlined design which ensures minimum friction between the ship and the water.