Samsung Heavy Industries reached the milestone a year after cuttingfirst steel for Shell’s 488-metre-long LNG leviathan.

Construction of Prelude still has some way to go before itis ready to be deployed off Western Australia in 2015 with first LNG not due until 2017.

(Click here to see a video of the roll out)

The unit will eventually produce 3.6 million tonnes perannum (mtpa) of LNG, 1.3