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goboatingnow · 09-08-2013, 08:07

Quote:

Originally Posted by o_q

Doesn't matter! You need to assume that your boat can be knocked down at ANY moment at ANY place, even in protected waters!

Oh for gods sake, that's nonsense

Dave

goboatingnow · 09-08-2013, 08:09

Quote:

Originally Posted by Wrong

Not sure what you are describing wasn't a broach. But, not having been there I'll accept your description of the event as a "knock down".

From: knockdown: definition of knockdown in Oxford dictionary - American English (US)

"Sailing an instance of a vessel being knocked on its side by the force of the wind."

Waves are not a factor.

Boats with hatches open when knocked down sometimes sink...

Its very very rare , especially on a mono hull, flying white sails , for wind to cause a knockdown.

Dave

Wrong · 09-08-2013, 08:14

Quote:

Originally Posted by goboatingnow

Its very very rare , especially on a mono hull, flying white sails , for wind to cause a knockdown.

Dave

Like in sex, it only takes once to get pregnant or acquire a disease...

Do what you will, but being prepared for the possible once in a lifetime event makes down home good sense.

That's all we're saying.

Wrong · 09-08-2013, 08:15

Quote:

Originally Posted by goboatingnow

Oh for gods sake, that's nonsense

Dave

Nope.

**Jim Cate** · 09-08-2013, 08:27

Quote:

Originally Posted by Wrong

Not sure what you are describing wasn't a broach. But, not having been there I'll accept your description of the event as a "knock down".

From: knockdown: definition of knockdown in Oxford dictionary - American English (US)

"Sailing an instance of a vessel being knocked on its side by the force of the wind."

Waves are not a factor.

Boats with hatches open when knocked down sometimes sink...

Well, I'm sure that the good folks who write dictionary definitions are experienced sailors, so why should I not believe them?

But really, I've noticed that in a very strong gust our boat heels... maybe as much as 45 degrees in a really strong gust... and then as the sails have less area exposed to the gust the heeling moment is reduced and pretty soon - well before 90 degrees is reached - an equilibrium is reached and the boat heels no further. Only in the fairly rare situation of a gust with a large vertical component will a true knockdown from a wind gust be possible.

And to say that waves are not a factor in a knockdown is just silly.

Finally, in the example of a knockdown that I experienced, we were hove to at the time and were struck from abeam by a large breaking sea which came from an angle well divergent from the general wave pattern. I do not believe that this would be defined as a broach.

Cheers,

Jim

o_q · 09-08-2013, 08:29

Somebody's gonna get fat eating all that popcorn

Wrong · 09-08-2013, 08:51

Quote:

Originally Posted by Jim Cate

Well, I'm sure that the good folks who write dictionary definitions are experienced sailors, so why should I not believe them?

But really, I've noticed that in a very strong gust our boat heels... maybe as much as 45 degrees in a really strong gust... and then as the sails have less area exposed to the gust the heeling moment is reduced and pretty soon - well before 90 degrees is reached - an equilibrium is reached and the boat heels no further. Only in the fairly rare situation of a gust with a large vertical component will a true knockdown from a wind gust be possible.

And to say that waves are not a factor in a knockdown is just silly.

Finally, in the example of a knockdown that I experienced, we were hove to at the time and were struck from abeam by a large breaking sea which came from an angle well divergent from the general wave pattern. I do not believe that this would be defined as a broach.

Cheers,

Jim

Waves are not necessary to have a knock down. Silly to you or not, it's true.

I notice you are driving a 46' boat. While you are carrying more sail, your boat's weight contributes to inertia that resists forces to a greater degree than my 27', 8,000 pound boat. An identical wind gust is more likely to knock my boat over than yours.

If a sailor is top sides and not below when a gust powerful enough to knock a boat over arrives, promptly spilling wind from the sails can save the day. Otherwise...

Looks like these sailors were taking a buoy out in preparation for a race. Don't know how much it contributed to the knock down, but there you are. Waves?