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  #11  
Old 11-23-2007
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There are a lot of wind turbines going up in UK waters. Lots of studies done, the ATC can see them on radar and so on. All the one's I've sailed past are on sandbanks where I don't care to go, so they tend to say "shallow water". Its a bit odd at night as their lights add to the puzzles in places.
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  #12  
Old 11-23-2007
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Quote:
Originally Posted by sailingdog View Post
ROFLMAO... I was wondering who the hell Cpn Malcom is... Just FYI, Captain Malcolm Reynolds isn't me... he's the captain of space-going tramp freighter named Serenity, in the short-lived TV series Firefly and the movie Serenity. I just loved the quote he says about starships...and thought it was equally applicable, with a bit of modification, to sailboats.
There I go again. Thanks for the correction.
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  #13  
Old 11-23-2007
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Quote:
Originally Posted by TrueBlue View Post
TPI, a fiberglass fabricator with a plant at our marina that also produces hulls for Pearson, JBoat and Alerion - among others, had a contract to produce vanes for a land based wind farm project a few years ago. I was amazed over the scale of these vanes, as hundreds of them were regularly trucked out on flat beds. The molds still sit in the boneyard behind the marina.
...
In spite of all the negativity though - it is a good thing.
GREAT photos, thanks. There was a program on CBC television on which someone visited one of the Danish windfarms, rode the elevator up one of the towers, and then popped his head out the top of the turbine housing to have a look around. Just a stunning view.

Update: I just looked up the program. It was a documentary called Earth Energy and it aired on the program Nature of Things in September. There's a web page about it here.
http://www.cbc.ca/natureofthings/earthenergy/index.html
No video unfortunately, but there is a pic of filmmaker Bill Lishman standing atop one of the Danish offshore turbines.
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Last edited by Diva27; 11-23-2007 at 12:50 PM. Reason: update
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  #14  
Old 11-23-2007
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Quote:
Originally Posted by TrueBlue View Post
TPI, a fiberglass fabricator with a plant at our marina that also produces hulls for Pearson, JBoat and Alerion - among others, had a contract to produce vanes for a land based wind farm project a few years ago. I was amazed over the scale of these vanes, as hundreds of them were regularly trucked out on flat beds. The molds still sit in the boneyard behind the marina.
...

In spite of all the negativity though - it is a good thing.
What's really interesting to a sailor in these rotor blades is the amount of twist in the angle of attack. The outer ends of the blade of course are moving through space much faster than the chord close to the hub, and so have to deal with major differences in apparent wind speed. Otherwise the outer part of the blade would be stalling like crazy. Maybe this reduces noise as well by limiting turbulence.
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  #15  
Old 11-23-2007
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They have one of these, albeit a bit smaller, in Hull, which is a significant navigation landmark for anyone sailing Boston's Outer Harbor, and another, even smaller one in Dorchester.
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  #16  
Old 11-23-2007
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There is an impressive line of turbines east of Copenhagen. See Google Earth

55 41 08.14 N 12 40 13.95 E

They show up nicely from above
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Old 11-23-2007
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PBzeer has a spectacular aura about PBzeer has a spectacular aura about PBzeer has a spectacular aura about
Would think a simple AIS transponder could be a helpful addition as well.
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  #18  
Old 11-23-2007
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A single turbine was installed by the Portsmouth Abby School a couple years ago. At first I thought it was visually obtrusive, but don't mind it at all now. The sound is not discernable at all from our slip, about 2 miles away - but the turbine is certainly visible.

It forms a very distinct visual reference from all areas of the upper Narragansett Bay. I even use it for taking bearings while sailing.


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  #19  
Old 11-23-2007
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Quote:
Originally Posted by PBzeer View Post
Would think a simple AIS transponder could be a helpful addition as well.
Without trivializing the hazards they might present in fog or inclement weather, at least these things are standing still and can be precisely marked on a chart, unlike freighters, fishing vessels and everyone else wandering around out there in bad visibility.
Some people will still hit them. A number of years ago I was in a regatta in which a 30-footer under spinnaker t-boned a lake freighter dead midships. They were all so busy trimming the chute and the main that they failed to notice this very large and very long multistorey wall of metal right in front of them. As I recall, their excuse was, "well, it was kind of grey and kind of hard to see."
(I'll try not to encourage thread drift here.)
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Last edited by Diva27; 11-23-2007 at 01:05 PM. Reason: typos
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  #20  
Old 11-23-2007
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Quote:
Originally Posted by PBzeer View Post
Would think a simple AIS transponder could be a helpful addition as well.
There was some talk of the coast guard transmitting AIS coordinates for dangerous structures. The turbine does not need its own transponder, as long as the CG coverage is adequate.
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