Global trade is booming again - good news for the shipping companies. MADE IN GERMANY visits Hamburg-based Norddeutsche Reederei, whose 49 container ships sail the world's high seas.Recently many of the ships started flying the German flag again. For the shippers it's a symbol of pride, but also a cost factor. Because ships flying the black-red-gold banner have a wide range of tough regulations they have to follow. br A report by Dan Hirschfeld.