Think of a boat sailing on her mooring. Does not the aft end follow the
bow? As she sails across the wind -tied to the mooring -does she not
advance a little way up wind before stalling and tacking off again?

Does that help you think more clearly grasshopper?


Cheers




Blorgad wrote:

We are disagreeing about fundamental behaviour characteristics of sailboats.
It has extended beyond our discussion of how to deal with a spinnaker into a
situation where we disagree on what is within and without the realm of
possibility. So, as competitive men are wont to do, we are trying to settle
it. So, do you have an opinion, or you going to Zen master me into a
frenzy?


"Nav" wrote in message
...

But why ask about such a foolish act grasshopper?

Cheers


Blorgad wrote:


Please read the letter again. The question is not how do we fly a

spinnaker

while moored, but rather is it at all possible for a bow-moored boat to

be

be turned around by a spinnaker, or any other combination of sails for

that

matter, so that the aft end travels upwind?


"Nav" wrote in message
...


What not transfer your anchor warp to the stern?

Cheers

Blorgad wrote:



My friend and I are having a disagreement regarding the behaviour of
sailboats on a mooring. We both have limited sailing experience,

although he


has a fair amount more than I. We were discussing running up a

spinnaker at


mooring in calm air, just to practice putting it up. We eventually
concluded that this wasn't practical, but the argument came in as to

our

our


different conclusions as to why it would not be. I felt that there

would be


no point to put it up, as it would just get blown into the rigging and

not


really tell us anything and possibly get torn. He was of the opinion

that


somehow the spinnaker could push the boat to one side, fill and turn

the


boat around. Initially he said it would go right upwind of the

mooring,

then reduced his claim to say that it would turn around at the point

where


it was attached to the line at the bow.

I am of the opinion that this is physically impossible and that under

no

combination of sail at a mooring could the boat turn around so that the

aft


was upwind. I am of the opinion that you could get the boat to swing

to

one


side or the other a bit by backing the jib, but you could still never

turn


the boat around.

I would gratefully accept as many informed opinions as possible on this

from


a sailing or physics point of view.

Fair winds,
Miles

Aw fer cripes sake... just tell him it can't be done.... and be done with
it!
It's like you are doin' a Feng Shui Shish Kabob with the poor guy here!

CM

"Nav" wrote in message
...
| Think of a boat sailing on her mooring. Does not the aft end follow the
| bow? As she sails across the wind -tied to the mooring -does she not
| advance a little way up wind before stalling and tacking off again?
|
| Does that help you think more clearly grasshopper?

The path to enlightenment is paved with the stones of analysis, thought,
logic and deduction. He must pave his own way as we all have done. Only
the true sailor is capable of original thought (This excludes most
people with motorboats).

Cheers




Capt. Mooron wrote:

Aw fer cripes sake... just tell him it can't be done.... and be done with
it!
It's like you are doin' a Feng Shui Shish Kabob with the poor guy here!

CM

"Nav" wrote in message
...
| Think of a boat sailing on her mooring. Does not the aft end follow the
| bow? As she sails across the wind -tied to the mooring -does she not
| advance a little way up wind before stalling and tacking off again?
|
| Does that help you think more clearly grasshopper?

MC,
Just what are you smoking these days?

--
katysails
s/v Chanteuse
Kirie Elite 32
http://katysails.tripod.com

"Women and cats will do as they please, and men and dogs should relax
and get used to the idea." - Robert A. Heinlein



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.712 / Virus Database: 468 - Release Date: 6/27/2004

Dude, I have done my own analysis and deduction based on thought and logic.
I am looking to have it confirmed or denied. A little swinging back and
forth aside, I do not believe that it is possible for a spinnaker
particularly, but any other combination of sail for that matter, to turn a
boat on a bow mooring aft to wind. I believe that as all forces are
transferred to the boat aft of the bow, that the boat must be swung aft to
lee. Would you please be so kind as to weigh in with a non-arcane opinion?


"Nav" wrote in message
...
The path to enlightenment is paved with the stones of analysis, thought,
logic and deduction. He must pave his own way as we all have done. Only
the true sailor is capable of original thought (This excludes most
people with motorboats).

Cheers




Capt. Mooron wrote:

Aw fer cripes sake... just tell him it can't be done.... and be done
with
it!
It's like you are doin' a Feng Shui Shish Kabob with the poor guy here!

CM

"Nav" wrote in message
...
| Think of a boat sailing on her mooring. Does not the aft end follow
the
| bow? As she sails across the wind -tied to the mooring -does she not
| advance a little way up wind before stalling and tacking off again?
|
| Does that help you think more clearly grasshopper?

Yo Dude, did you consider a 5kt current with an opposing 1~2kt wind?

Scotty Dude

"Blorgad" wrote in message
...
Dude, I have done my own analysis and deduction based on thought and
logic.

Yes I have, but this is really a question about what the sails are capable
of. That could occur with current with or without sails. I do not believe
that the sails could turn the boat aft to wind while on a mooring, spinnaker
or otherwise.


"Scott Vernon" wrote in message
...
Yo Dude, did you consider a 5kt current with an opposing 1~2kt wind?

Scotty Dude

"Blorgad" wrote in message
...
Dude, I have done my own analysis and deduction based on thought and
logic.

I meant to practice raising your spinn.


"Blorgad" wrote in message
...
Yes I have, but this is really a question about what the sails are capable
of. That could occur with current with or without sails. I do not
believe
that the sails could turn the boat aft to wind while on a mooring,
spinnaker
or otherwise.


"Scott Vernon" wrote in message
...
Yo Dude, did you consider a 5kt current with an opposing 1~2kt wind?

Scotty Dude

"Blorgad" wrote in message
...
Dude, I have done my own analysis and deduction based on thought and
logic.

"Blorgad" wrote in

I do not believe
that the sails could turn the boat aft to wind while on a mooring,
spinnaker
or otherwise.


Sure they could, if you knew what you were doing.

Sv

So, thanks to my teaching, you have formed your truth from your
deduction skills. At this point the wave function of probability has
collapsed and your reality has formed. This is admirable. Even if I were
to tell you what I believe to be true, that would not help for others
may claim I know nothing about sails. So do you not see that I can only
say that I think your deduction is correct but not say there is an
absolute truth in your words young grasshopper?

Cheers

Blorgad wrote:
Dude, I have done my own analysis and deduction based on thought and logic.
I am looking to have it confirmed or denied. A little swinging back and
forth aside, I do not believe that it is possible for a spinnaker
particularly, but any other combination of sail for that matter, to turn a
boat on a bow mooring aft to wind. I believe that as all forces are
transferred to the boat aft of the bow, that the boat must be swung aft to
lee. Would you please be so kind as to weigh in with a non-arcane opinion?


"Nav" wrote in message
...

The path to enlightenment is paved with the stones of analysis, thought,
logic and deduction. He must pave his own way as we all have done. Only
the true sailor is capable of original thought (This excludes most
people with motorboats).

Cheers




Capt. Mooron wrote:


Aw fer cripes sake... just tell him it can't be done.... and be done

with

it!
It's like you are doin' a Feng Shui Shish Kabob with the poor guy here!

CM

"Nav" wrote in message
...
| Think of a boat sailing on her mooring. Does not the aft end follow

the

| bow? As she sails across the wind -tied to the mooring -does she not
| advance a little way up wind before stalling and tacking off again?
|
| Does that help you think more clearly grasshopper?