LONDON, Dec 5 (Reuters) - The market for old oil tankers is booming, and it's all down to efforts by Western nations to curb trade in Russian crude. The European Union banned all seaborne Russian crude imports from Dec. 5, with a fuel import ban to follow in February. PRICE SURGEMajor Western oil companies typically stop using tankers when they are about 15 years old, and many would be scrapped. More tankers are now being used for voyages taking weeks, shipping Russian oil from the Baltic and Black Sea to Asia, whereas Russian oil was mainly sold in Europe previously and the voyages only took a few days. Ship broker Braemar also said that some of the vessels involved in shipping Iranian and Venezuelan oil were shifting to transporting Russian oil.

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