An oil tanker damaged by a fire in the Baltic Sea was towed to a German port after a five-hour operation, authorities said early on Saturday. The 73-metre Annika, which was reportedly carrying 640 tons of heavy fuel oil when a fire broke out on board early on Friday, was towed to Rostock port by two tugboats, docking there at 1 am on Saturday (2300 GMT Friday). The blaze, which had been contained to the engine room while the vessel was at sea, was to be put out entirely once the fire brigade and the German Central Command for Maritime Emergencies give the all clear. All seven crew members on t…