This is the crane boom for one of Smits heavy lift barges which went up yesterday morning, I think she is the ex Hebe 3 now called Taklift 7. Locals will remember her when she was at Ardyne Point in 1977 with the Brent C and Commorant A platforms.
You may get some good shots when its all put together if you are on the mainland!
http://shipoftheday.blogspot.com/2007/10/taklift-7.html