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Old 03-15-2015, 12:16 PM   #41
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James recently moved his blog to a new host, and now his in-depth posts/articles are easy to find. I think the write up in the link below of the knock-down is a lot more informative than the initial link I posted, or for that matter the mag. article. 69.1 degrees | MV Dirona
Good bump. And good on James and Jennifer for sharing this humble moment in detail. It makes us all a little more aware, and therefore safer.
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Old 11-14-2018, 08:45 PM   #42
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Wow, I have read some of their blog accounts, but not this bar crossing. I would think a 69 degree roll put that boat at its limit. Their hydraulic bilge pump is a beast. Amazing couple living life to the fullest.

Reading through the Nordhavn list. Just realized I resurrected an old thread.
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Old 11-15-2018, 12:52 PM   #43
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Wow, I have read some of their blog accounts, but not this bar crossing. I would think a 69 degree roll put that boat at its limit. Their hydraulic bilge pump is a beast. Amazing couple living life to the fullest.

Reading through the Nordhavn list. Just realized I resurrected an old thread.

Thanks for the bump. That had to be an intense few minutes.
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Old 11-15-2018, 01:13 PM   #44
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69deg roll data came from a gps direction finder (??? something GPS). I don't doubt it was a harrowing ride, but wonder how accurate that instrument is in a highly transient situation.
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Old 11-15-2018, 02:20 PM   #45
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69deg roll data came from a gps direction finder (??? something GPS). I don't doubt it was a harrowing ride, but wonder how accurate that instrument is in a highly transient situation.
Prolly as good as the one in a Wii or iPhone. Which is plenty good for this! No need for any GPS data, actually.
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Old 11-15-2018, 03:55 PM   #46
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That bar should command plenty of respect, plenty of boats lost there.
I have been through there 50+ times and was surprised to read someone of their experience leaving moreton bay in building southerlies with that crossing in mind.
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Old 11-15-2018, 06:28 PM   #47
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The permanent clench marks I would have left in the seat vinyl would have confirmed the telemetry.
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Old 11-15-2018, 08:10 PM   #48
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A 69 degree roll is not surprising when knocked down by a wave like that in a bar. They were lucky to have the bilge pump capacity to handle it. And lucky nobody was injured by the "waterfall" of loose teak furniture. I would have thought they would have secured everything prior to attempting a bar crossing under sketchy conditions.

I agree with Insequent regarding the air intake design. It shouldnt be the limiting factor for a boat sinking in a knockdown.

Any knock down is certainly a butt clencher. I experienced one when hit on the beam with a sudden microburst of wind under full sail. No idea of the angle of roll but it was enough to make the rudder useless. They don't do much when close to horizontal. I was pinned down for about 30 seconds before I managed to point into the wind. External air intakes would have caused me a lot of grief. My air intakes are inside the cockpit, protected by wide combing and therefore I took on minimal water.

I would have expected a Nordhavn to have a system at least as good as this.
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Old 11-16-2018, 10:32 PM   #49
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the permanent clench marks i would have left in the seat vinyl would have confirmed the telemetry.
hahhahahha!
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