Hi BoH - thanks for your prompt response.  I read through translation of your History of the Oil Tanker article and it's quite nice.  With respect to the oil tanker article, I'm sure you understand that I have to edit everything that's added while it's in the good-article review stage.  As for the number of citations: I know that the English Wikipedia is much more picky about citations than others.  The Rule of Thumb is "Not every statement in an article needs a citation, but if in doubt, provide one."  Cheers. Talk