VesselFinder.com, which tracks marine ship movements, located the Danish patrol boat P525 at about one nautical mile away from the Chinese-flagged ship on Thursday morning Europe time.

After four weeks of surveillance, Danish naval ships have left the Kattegat area, where the Chinese vessel Yi Peng 3 remains anchored.

As cars whizzed by and construction workers hammered away at building projects in downtown St. Petersburg, an 80-year-old ...