Pentagon at Puerto Madryn, Argentina
I was sent out to Argentina to inspect this rig in 1995. It was eleven years old but had only been used for 18 months, so was in pristine condition. I can't remember the name of the rig, but it was a five-legged 'Pentagon'.
I remember they de-ballasted her and we had to inspect a normally flooded tubular by climbing through a hatch on the underside into the member with head torches. Half way along there was the petrified carcass of a seal stuck to the roof of the tubular - bit of a shock!
Picture added on 30 October 2006