Ships are seen in choppy waters near Russia's port Kavkaz in southern Russia, November 11, 2007. A severe storm broke a small Russian oil tanker in two off the Ukrainian port of Kerch on Sunday, spilling up to 2,000 tonnes of fuel oil in what a Russian official said was an "environmental disaster". The same storm in the Black Sea and Azov Sea also sank four freighters, three carrying sulphur and one with a cargo of scrap metal. The heavy seas also cracked the hull of another oil tanker, but the ship was afloat and not leaking. [Agencies]