They are playing you greenpeace
If I were running the rig security considering the vast loss of income & expenses greepeace would never have got near the rig let alone on board. This could easily be accomplished without hurting anybody using latest equipment which I have seen in operation, for less than hundred thousand pounds which is peanuts to them and can repel armed pirates from tankers. This begs the question WHY NOT? There are many people in the know employed by these companies who know much more than I do with unlimited funds. They want greenpeace to do these things otherwise they could not. the company is playing you, greenpeace should be very careful or its organisation will suddenly find it self the " baddies" with world option against them & loss of all funding, which would be a very bad thing for the planet.