Commercial shipping can be easily tracked because each vessel is equipped with a transmitter and automatically broadcasts its location. That is done so that (in the event of an emergency), rescue craft can be quickly dispatched to render aid.A couple weeks ago, however, something unusual happened. All of China’s ships went silent. This happened just as the Beijing Olympics were ending and Russian President Vladimir Putin was moving armies into position to attack Ukraine.Now, why do you suppose China would want to hide the location of its merchant fleet?Add this to the fact that the United States asked China to ...