An oil tanker runs aground off eastern China, leaking fuel into the water. Another is caught in a collision near Cuba. A third is seized in Spain for drifting out of control.These vessels were part of a "shadow" fleet of tankers carrying oil last year from countries hit by Western sanctions…<p><p>https://www.marinelink.com/news/oil-spills-near-misses-ghost-tankers-ship-503871</p></p>