I’m back in the land of the internet, no silly limits anymore, I actually got back last week but the wife and I headed off to Bruges for a few days R&R.
So this wind farm business! Why? How? I’ll try and explain.
First of all there are two barges, The Excalibur and the Deep Diver, these have to be positioned in such a way, with about 50cm tolerance so we can use both cranes at the same time, this is very important which will become clear in later posts.
We can only move these barges at slack water (In between tides) as the current is very fast because the water is so shallow, a couple of meters in some places. First we move the Excalibur and about 6 hours later the Deep Diver, we use two boats, the Valiant and the Sergeant Pepper.
Here’s the Valiant.
And the Sgt Pepper.
Photo by Sydney Sinclair
We use the Valiant to tow us close to the location with help from Sgt. Pepper, then the Valiant is released from the tow and with help from Sgt. Pepper we walk the barge onto it’s final location, this is done by placing one leg on the seabed and with the Sgt. Pepper pushing or pulling we swivel around that leg, we will then drop another leg and do the same again, a little bit of tweaking and we are there.
Here is the Deep Diver on location at one turbine, the Excalibur has already been moved off to the next turbine.
Coming alongside the Excalibur for my lift off by Billy Pugh, you can get an idea of the scale of the job at hand.
Now some of you may have noticed the cranes don’t seem big enough to reach above the turbine to remove it, more on that tomorrow.