Carriers a dead concept? Ummmm ..... errrrr ...... ask our Chinese "Global Maritime Partners."The emergence of a giant concrete ship in the unlikely setting of Wuhan is the latest sign that Beijing's desire for aircraft carriers is fast moving towards a full-blown production programme.All I can think of is, "That is how you build an OLF!"Oh, and the cranes below?A leaked security picture of the shipyard at Changxing shipyard showing heavy lifting cranes that have recently been put in...