| |  | Yachts vs. Rogue Waves... |  | | |
08-08-2005, 06:46 AM
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#16 | | Senior Member
Join Date: Feb 2005 Location: Melbourne Australia
Posts: 182
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Living in the area (about 60km's away), I know of Bass Straight's reputation for dangerous weather, but as a question for well traveled captains, is Bass Straight know on a global scale?
And how does it stack up against the likes of Cape Horn and other well known dengerous waters?
I'm guessing that Bass Straght's out of the way-ness my tend to make it a little less known?
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08-08-2005, 08:45 AM
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#17 | | Senior Member
Join Date: Jun 2005 Location: I have an old homestead about 3 hours drive west of Sydney but I am hardly ever there
Posts: 376
| Nasty pieces of water
There are many nasty pieces of water around the world, Bass Straight is definately one of them. Shoals, strong currents and at times strong breezes, I have been through the straights under sail 6 times twice it was glassy calm 3 times it was a nice sail and the other time we got the absolute s@#$ kicked out of us. Kind of similar to my experiances with Cape Hatteras.
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04-25-2006, 12:07 PM
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#18 | | YF Moderator
Join Date: Nov 2004 Location: Montreal, Qc, Canada
Posts: 1,441
| Yachts vs. Rogue Waves...
Just thought I'd add this image...   | |
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04-25-2006, 12:09 PM
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#19 | | Publisher/Administrator
Join Date: Dec 2002 Location: South Florida
Posts: 10,228
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WHOA! 
Is that real, or PhotoShop?
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04-26-2006, 01:00 AM
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#21 | | YF News Associate
Join Date: Mar 2006 Location: Caribbean
Posts: 2,864
| Quote: | Originally Posted by YachtForums WHOA!
Is that real, or PhotoShop? |
on cruisetalk, there has been much debate about that particular picture. Some memebers say it was photoshopped, while some say it was real so i really dont know. To me it could be both.
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04-26-2006, 06:57 AM
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#22 | | Registered User
Join Date: Nov 2004 Location: Hamburg, Dunnon, Buzios
Posts: 117
| video of Freak wave
I have a video of a cruise ship hitting a freak/large wave, originall from the German TV show Spiegle. The video was posted on the website Grosse seefahrt, but you need to log in to see it, and its in German. The ship is one of the mini cruise ships build by Blohm and Voss and it wa sin the mediterrnian, amazingly scary as there is a camera in the bridge and you see the wave comming up then breaking over the bow then smashing throgh the bridge windows.
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04-26-2006, 01:26 PM
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#23 | | YF News Associate
Join Date: Mar 2006 Location: Caribbean
Posts: 2,864
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Obviously you are talking about the former speed twins that were from Royal Olympic Cruises. They were known as Olympia Voyager and Olympia Explorer...They are very fast vessels...having a max speed upwards of 32 knots...and that is very fast for a ship weighing 25000 tonnes. About two years ago they both were struck by freak waves and suffered similar damage, thats is, smashing the bridge windows. This all happned after they belonged to R.O.C.
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05-16-2006, 09:26 AM
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#24 | | Senior Member
Join Date: Jan 2006 Location: Tampa, FL
Posts: 471
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Saw something about this the other night on the History Channel. It was a show about rogue waves and was very interesting.
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05-16-2006, 09:29 AM
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#25 | | YF Moderator
Join Date: Nov 2004 Location: Montreal, Qc, Canada
Posts: 1,441
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The History Channel is cashing in on the Poseidon movie I guess. 
Here's another great wave pic... not a cruise ship this time though.
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05-16-2006, 09:32 AM
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#26 | | Senior Member
Join Date: Jan 2006 Location: Tampa, FL
Posts: 471
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Yes, they had a lot of footage from the movie.
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05-16-2006, 01:20 PM
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#27 | | YF News Associate
Join Date: Mar 2006 Location: Caribbean
Posts: 2,864
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i remembered this! that was quite frightening just seeing that! I never saw a wave attacking a ship so high!
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05-16-2006, 02:49 PM
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#28 | | Publisher/Administrator
Join Date: Dec 2002 Location: South Florida
Posts: 10,228
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A British research team has observed some of the biggest sea swells ever measured. A whole series of giant waves hammered into their ship that were so big, according to computer models used to set safety standards for ships and oil rigs, they shouldn't even exist... http://service.spiegel.de/cache/inte...8953%2C00.html | |
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05-17-2006, 10:57 AM
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#29 | | Publisher/Administrator
Join Date: Dec 2002 Location: South Florida
Posts: 10,228
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THIS... is why we use Dockwise! | |
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05-17-2006, 06:47 PM
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#30 | | Senior Member
Join Date: Dec 2005 Location: North Palm Beach, Fl.
Posts: 114
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Back to the topic of Rogue Waves, "Oceanography and Seamanship" by Van Dorn has an excellent discussion on constructive interference in a wave system. There are nomographs showing how for a given wind speed and fetch there will be waves of a given mean height with anomalous waves reaching 4 times to 8 times mean heights due to interference. I seem to recall that every 10,000 waves there will be one several times the mean height with many that are twice the mean.
Everyone who has been to sea knows that when the NOAA reports 8 to 10 footers you can count on getting hit by a few 15 footers even in a fairly short passage.
Van Dorn also has photos and reports from US Navy tank testing that show a vessel should survive an encounter with a breaking wave as long as the wave height is less than the dimension of the vessel's exposure to the wave...ie a 100 foot vessel going head into a 30 foot wave should survive. The same 100 foot vessel presenting her 22 foot beam to the 30 foot wave will have a good probability of capsize. And of course we all know that most motor yachts are NOT self righting!
Dave
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