Note the actual size of the Deepwater Horizon Blowout Preventer as it is held just above the support frame, after having been raised through the moon pool of the Q4000. Compare the size of the folk standing around. (The BOP is the large frame with the yellow legs on the corners, being held just above the red platform with the four vertical bracing columns).

And then it was lowered and latched into place on the red platform, that can help to move it and support it.

Meanwhile the LMRP that should sit above the new BOP is still on its way to the surface.

A press briefing was held earlier on Saturday. The BOP transferred from the second relief well has now been put in place. It can withstand 15,000 psi of pressure. With the new BOP in place, all threat of discharge has been eliminated. According to Admiral Allen,