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Old 10-26-2015, 01:39 PM   #21
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I fish up their regularly and from PNW.

The swells are swells. They are hazardous near the rocks of course. There were no significant wind waves. Guessing watching seals and a swell lifted them onto rocks. Tide was near the low side.

7 days Tidal Predictions - Tides, Currents, and Water Levels

Currents can be pretty strong but less than say in the Puget Sound. More issue with swell action.
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Old 10-26-2015, 02:11 PM   #22
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There is a big difference between 10-12' wind driven waves a 10-12' long period swells on a clam day.
Yes, I know. Since there is lots of confusion about what the real cause of the sinking was, I showed a link to one scenario, nothing more.
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Old 10-26-2015, 02:36 PM   #23
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Perhaps they wandered over a rock shallow enough to have somewhat the same effect as a "boomer"?. I'm thinking of a rock the size of a house .. or wearhouse. The comments using the expression "rogue wave" may relate to a boomer like situation. I've only seen big boomers once up close .. very scary. I gave it a really wide berth.

Unless the boat was actually touching the bottom (as in post #12) she should roll over if her CG was anything like low. Where the air was would be perhaps equally important however.
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Old 10-26-2015, 02:55 PM   #24
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Reports are they got a distress call off, if so that would mean they knew they were in trouble before it rolled. Could also have been another vessel making the call.

Really sparse info on the various news sites. Maybe a journalist out there could interview a survivor instead of making videos of still shots of parked ambulances!!!
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Old 10-26-2015, 03:14 PM   #25
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Journalist on Twitter reports 14 missing, but local news is reporting 22 accounted for, so 5 missing.
5 out of 4 people have problems with fractions
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Old 10-26-2015, 09:29 PM   #26
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If my memory is serving me I believe this accident location is at the entrance to bull shit pass. Locally named. Very interesting currents over and between very interesting grounds. But an awesome place to watch, listen, smell, whales, especially humpback's. To sit on the water at night under the stars, hear the blows, smell the breath of a big guy.

Very sad, my heart goes out to all. Here on this coast it's usually a fellow mariner to the rescue, it's just so remote outside of the " lower mainland.
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Old 10-27-2015, 12:17 AM   #27
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An eyewitness account: Frightened passengers recall huge wave hitting boat that sank
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Old 10-27-2015, 07:08 AM   #28
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So sad....

I can't help wondering how it happened.

I'm thinking that if the boat had the swell on its beam to provide the best viewing on the shoreline, and there are 22 people on the leeward side of the upper deck watching seals, the COG is substantially changed.
A large swell, slightly breaking may be enough to roll the boat to the point where it takes on water. The next one could roll her over.

All speculation of course, but I wonder if the designers of tour boats take the possibility of all passengers being on one side, into the stability calculations?
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Old 10-27-2015, 07:32 AM   #29
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Or worse, thrown to one side from an abnormally large wave.
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Old 10-27-2015, 09:07 AM   #30
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Or worse, thrown to one side from an abnormally large wave.
Agreed, and from the one statement by one of the victims in the above article, sounds like a very likely scenario.

very sad indeed...
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Old 10-27-2015, 01:23 PM   #31
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From the article linked to above:
"He arrived on scene to see nine people in a life-raft, several more on the rocks and the ship itself all but gone except for the bow. "


One would think that a skipper who'd been operating in those waters for as many years as he had would have known where the rocks were and would have stayed away from them. Just speculating.
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Old 10-27-2015, 04:39 PM   #32
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Whale watchers down

This was a former seiner that was converted over to a tour boat. It looked to me that it was quite narrow and very high for the length. Stability might have been lost in the conversation. It did however go through a Transport Canada inspection. Not sure if this included stability testing. All speculation right now. Did they high centre it on a rock or did it just roll over in a beam sea? We will have to await the report.


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Old 10-27-2015, 09:10 PM   #33
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TSB has released some preliminary material. Most of the passengers and crew were on the top deck on the port side, a wave came from the starboard quarter causing the vessel to broach. Looking like a stability issue.


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Old 10-27-2015, 09:29 PM   #34
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JDCAVE,
Never seen a shallow draft and narrow seiner before. Judging from the pic of the fwd section mostly vertical in the water.
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Old 10-30-2015, 12:35 PM   #35
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Correction: earlier reports indicated the Leviathan II was a former seiner. They now report that it was originally a passenger vessel for a logging company. They added an observation deck. That makes a lot more sense to me as the wheelhouse looked nothing like any seine vessel I've ever seen.


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Old 10-30-2015, 12:56 PM   #36
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AusCan has nailed what happened.
This boat was modified almost 20 yrs ago and got away with it for a long time. The skipper should have known the characteristics of his boat well enough to keep from getting broadside to the waves and allowing most of the movable weight to go onto the upper side all at once.
TSB will rule when they get all the facts, but we may never get an official version of what happened that is any better than our current best guess.
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Old 10-30-2015, 01:53 PM   #37
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Some thoughts from Tad....

Low Tide | Yacht Designer Tad Roberts' Web Log
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Old 11-01-2015, 12:07 PM   #38
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Some more here

Tofino whale-watching ship's twin shows extent of modifications - British Columbia - CBC News
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Old 11-01-2015, 12:49 PM   #39
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Nice to see Tad Roberts quoted in the piece. Thanks, Craig.
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Old 11-01-2015, 05:18 PM   #40
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another tale with not many facts to chew on yet...


passed stability...but what are the requirements and what happened to prove the testers wrong????...more info needed and just thinking it looks top heavy doesn't really prove that it is.
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