Dear Pilot Frans, thanks for your comment - and your eagle eyes :) Now the mystery is solved...
@all: have a nice weekend furtherone,
Regards, Hilmar

The one on the right is the Ensco 72
see http://www.shipspotting.com/gallery/photo.php?lid=2505337

name is visable in the drill tower :)

@Jürgen, your are right concerning Paragon C20051 (in the middle of this photo) - sorry for my misleading comment :-(
Now I have updated the descriptions of all my four photos. BUT: Noble Regina Allen is the one outside of Doggerkaj, the right one in this photo:
http://www.shipspotting.com/gallery/photo.php?lid=2517715
and the second one (from left to right) on this two photos:
http://www.shipspotting.com/gallery/photo.php?lid=2517722
http://www.shipspotting.com/gallery/photo.php?lid=2517707
which show Maersk Resolute und Noble Regina Allen outside the Harbour and I've just confirmed the position of Noble Regina Allen via http://www.marinetraffic.com/de/ais . So for me the right one remains unidentified... But thanks for your efford and your comments
Regards, Hilmar

@Hilmar, your info was Paragon C20051 is in the middle, so the platform on the right side is NOBLE REGINA ALLEN - IMO 8771227
http://www.shipspotting.com/gallery/photo.php?lid=2505358

http://www.marinetraffic.com/en/photos/of/ships/shipid:3612190/shipname:NOBLE%20REGINA%20ALLEN/mmsi:636015375
Rgds.
Juergen

Thanks, Jürgen, for your hints. Atlantic Labrador to the left seems to be ok, but the right one isn't Paragon C20051, since this is berthed some more to the left and was identified via AIS. So the mystery remains...

Imagine base-jumping off the top of one of those legs !! Something I've always wanted to try (in my younger years of course!)

To the right possible IMO 8771227
http://www.shipspotting.com/gallery/photo.php?lid=2505358

to the left seems to be ATLANTIC LABRADOR - IMO 8751473
http://www.shipspotting.com/gallery/photo.php?lid=2317448

Juergen