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[email protected] October 28th 07 08:31 AM

October 26 - What A Drag!
 
On Oct 27, 2:41 pm, Skip Gundlach wrote:
... I wasn't able to find any author by that name. However, I have,
now, read a 21-year-old text by that name and which had Earl
Hinz, as I offered in my reply before, as the author. ...


Earl R Hinz is one of my heroes. He is an extraordinarily talented
writer and researcher and has produced the seminal books on cruising
in Oceania based on his own trailblazing travels. You may disagree
with him, and there are a few thoughts of his that I take issue with,
but he deserves more than an ordinary amount of respect. The last
edition of _The Complete Book of Anchoring and Mooring_ came out in
2001. I have an older edition and I don't know if the new one
mentions the newer anchors but even if it doesn't the fundamentals
haven't been changed by them. I've been using a Spade for a few years
now and it is a good anchor, but it is used in the same way as the
Delta from which it was evolved. Not that anyone can learn to anchor
by reading books alone, but the Hinz book on anchoring is worth a read
and his articles and books on Pacific cruising are very good, indeed.
Of course, I think Bob is being silly, but I hope that won't put you
off Hinz.

On a more or less unrelated topic, I use my GPS for anchor watch all
the time. I've got a Furuno GP-31 and it has a simple graphic page
that displays a "bread crumb" trail. I find that I can see where I
dropped the anchor on that screen and put a goto point there. The
anchor watch alarm is then set to go off if I go outside a circle
around that point. While we sit at anchor the gps continues drawing
the track on the screen and pretty soon a thick arc is drawn. This
makes it very easy to see if we are dragging even if it is pitch black
and raining as it so often is when a front passes by in the night...

-- Tom.


Skip Gundlach October 28th 07 10:38 AM

October 26 - What A Drag!
 
Hi, Jeff, and Group,

I probably shouldn't continue with this, as my name is already mud, ya
know, but, just a couple of observations...

On Oct 27, 10:36 pm, jeff wrote:
Skip Gundlach wrote:

...

Well, apparently several reasons. None are particularly
important; I presume it to be that I misread a fouled anchor,
when, instead, it was a lousy mud bottom which had done me in on
the first pull. Not having sampled the bottom directly, but only
by apparent set, I didn't know the nature of it as being -
apparently, in hindsight - the same lousy stuff we abandoned on
the other side of the channel when we first started on our time
in Oxford, when we didn't set well, and I did, indeed, do the bottom
sample, albeit with a 55# Delta.


Duh! What a coincidence - soft mud in two different parts of the
Chesapeake! What are the odds of that?


This is the first time I've ever been in, let alone cruised the
Chesapeake, and the only reason I was in it was to make the trip south
a bit more interesting for my 82 year old Mother-in-Law, who joined us
in NY on September 1. The ICW isn't my cup of tea.

Having said that, we've enjoyed where we've been so far, and, as those
who have been around long enough to have observed my style, anything
which has happened which didn't kill me is merely part of life's
fabric, and an adventure. So, I don't get very fussed about it, and
instead, provide target practice for those who are better than I, and,
sometimes, cautionary tales for those who haven't made my mistakes
yet.

My bad. Repetitively admitted. I'm unlikely to make the same mistake
twice, whatever it is.


'''



I can't find anything by him. However, in the book of the same name
by Hinz, the author suggests sampling only a very small portion of
only the surface. If you thought that duck consisted of a few inch
circle of feathers, you'd be missing a pretty good meal, but that's
what you'd get with his soap, grease or other sticky to pull up
something from the bottom. I'll take a core sample or at least a foot
or so of some other means, thanks.


Ah! Hinz is an incompetent bozo because he doesn't advise taking many
core samples to figure out there's mud in the Chesapeake.


No. I was disputing the absolute certainty that the only way to find
out what the bottom was composed of was to do a Hinz-stick maneuver.
I don't agree with that as being sufficient information. I agree that
it's a quick and dirty (muddy?) way to get some debris from the top of
whatever you're over. I'm much more interested in what's underneath.


No, you're correct that I didn't
do that in my second anchoring location; had I, I might have anchored
differently. My bad. But then, again, I've never been shy about
admitting those, have I?
For god sakes man. Just go to a book store and order it ! ! !
or go
on line and order it


Already read it. Well, already read what I presume you intended
me to read, not something by a nonexistent Hintz. Interesting
reading and I see that it's where you got all your questions.
Now that I know how to find the means to calculate, perhaps I'll
do that. Other than the minutiae of calculation, I didn't see
anything in the book which was new information to me;


Yes, it's clear you have the anchoring thing down pat now.


Nor did I say that. I said I didn't see new (to me) information. As
someone else in this thread has observed, reading and application are
different things. Whether I knew something and applied all the
knowledge are not necessarily congruent.


I did see lots
of old data/equipment and not the first word about third generation
anchors which are available today...


Skip, this has to rank amongst the dumbest things you've said here.
Perhaps you can enlighten us as to how these "third generation anchors"
have made Hinz's work obsolete.


Nor did I say it was obsolete. However, to your point, and mine,
which related to rode, the state of the art has changed since the
edition I read. I was being taken to task for an inadequate
(inferred) rode; it's my opinion that the cordage and hooks today are
superior to that shown in the book I read as directed (assuming Bob
merely has a twitchy "t" finger and isn't trying to have me read
something else), and that what I have done to construct the several
rodes we have aboard is sufficient to the task at hand.




Now, if you'll excuse me, I'm going back to my movie.


The time would be better spent reading a good book on anchoring. I
suggest Hinz.


Not a bad suggestion. And if you've bothered to read for content
rather than merely to find something to shoot at, you'd have seen that
I have done just that. However, having completed my assignment for
the day, I went back to entertaining my two lady companions.

For now, I'm considering whether I want to go out in nasty stuff (not
dangerous), flying down to Solomons, or take another day in Cambridge
and go to church, instead.


L8R

Skip

Morgan 461 #2
SV Flying Pig KI4MPC
See our galleries at www.justpickone.org/skip/gallery !
Follow us at http://groups.google.com/group/flyingpiglog and/or
http://groups.yahoo.com/group/TheFlyingPigLog

"You are never given a wish without also being given the power to
make it come true. You may have to work for it however."
(and)
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hands. You seek problems because you need their gifts."
(Richard Bach, in The Reluctant Messiah)


Goofball_star_dot_etal October 28th 07 10:54 AM

October 26 - What A Drag!
 
On Sun, 28 Oct 2007 10:38:41 -0000, Skip Gundlach
wrote:


For now, I'm considering whether I want to go out in nasty stuff (not
dangerous), flying down to Solomons, or take another day in Cambridge
and go to church, instead.


Go for the prayers! :-)

Ernest Scribbler October 28th 07 04:15 PM

October 26 - What A Drag!
 
"Brian Whatcott" wrote
a tone so civil


Did you catch the PS at the end? I sometimes wonder if the people who post
evangelical "you must do as I say or you're a vile menace" rants are such
confrontational jerks in person. I hope not. Bob may be a treasure trove of
anchor wisdom for all I know, but when he comes off as just another troll
with a hard-on for Skip, the credibility meter takes a dip.



Vic Smith October 28th 07 04:15 PM

October 26 - What A Drag!
 
On Sun, 28 Oct 2007 10:38:41 -0000, Skip Gundlach
wrote:

Hi, Jeff, and Group,

I probably shouldn't continue with this, as my name is already mud


Nope. Many here appreciate your journals, even the snipers.
Just the nature of usenet.
My compliments to you for your level-headedness in handling them,
among your other travails.

--Vic

cavelamb himself[_4_] October 28th 07 05:09 PM

October 26 - What A Drag!
 
Vic Smith wrote:

On Sun, 28 Oct 2007 10:38:41 -0000, Skip Gundlach
wrote:


Hi, Jeff, and Group,

I probably shouldn't continue with this, as my name is already mud



Nope. Many here appreciate your journals, even the snipers.
Just the nature of usenet.
My compliments to you for your level-headedness in handling them,
among your other travails.

--Vic


And for sharing your adventures with us.

Richard

Bob October 28th 07 06:15 PM

October 26 - What A Drag!
 
On Oct 28, 8:15 am, "Ernest Scribbler"
wrote:
"Brian Whatcott" wrote

a tone so civil


Did you catch the PS at the end? I sometimes wonder if the people who post
evangelical "you must do as I say or you're a vile menace" rants are such
confrontational jerks in person. I hope not. Bob may be a treasure trove of
anchor wisdom for all I know, but when he comes off as just another troll
with a hard-on for Skip, the credibility meter takes a dip.



Ernie & Brian:

Ah,, come on guys. I dont get to be an ass hole any place else. To be
honest I have had a gut full of collegial congeniality. To be honest
Skip reminds me too much of who Ive had to work with for the past 16
years. Well meaning, likable guys who go to church, smile and nod
their heads then completely ignore some petty good advice from some
pretty smart guys that post here (me excluded). I find it refreshing
to say it the way it is. I wish for once he would just tell me to go
get ****ed.

I enjoyed someone's description of this place a few weeks ago. I can t
remember the analogy but something close to, is like a bar that
doesn't close and will let anybody make a fool of themselves without
getting kicked out. I thought that was a right-on description.

As far as my experience goes it may be a bit different than most
yachters. I spent some time working with my Swedish step dad who
commercial fished his 62' dragger off WA/OR; GOM diver mostly on
scrap jobs (salvage) 10'-320'; American, Polish, Russian, Korean,
Japanese factory trawlers in Bearing Sea. So I got to see lots of
different ways to tie stuff together. I am by no means knowledgeable
about anchoring. I've just seen lots of different ways to get a job
done. Combine these experiences with my total lack of civil demeanor
in this place makes for some pretty outlandish statements.

Skip asked, what kind of shakels do I use attaching road to chain,
chain to anchor.

Two words:
1) Trawlex Grade 100 chain to anchor. Theyre cheep, small, and strong
ie G100 compared to G40, an not galvanized. So I just swap it out once
a year when I inspect my ground tackle. If a 400' factory trawler uses
them to drag a 100 MT bag of Pollock out of the Bering Sea I think its
good enough for my needs.

2) Nylite thimble (Samson) road to chain connection. If you don't know
about these pretty PLEASE go to this link and take a look. The USCG
use them on OR/WA/AK life boats. http://www.samsonrope.com/site_files/cm2004.pdf
and no.... it wont go through your gypsy. But then I get a bullet
proof 95-100% connection.

And no I don't use three strand nylon for road. I use nylon double
braid. Although I might go to some of the 12 plait products soon. Very
easy/fast to splice and still get 10 percent stretch at 30% load. Oh,
and tough as nails. Oh, and CHEAPER!

There are lots of ways to do stuff. Just got to stay out of West
Marine and Cruising World.
So to all a sincere apology. Just don't look for a change any time
soon in my phatic conversation style.
Bombastic Bob





Brian Whatcott October 28th 07 06:23 PM

October 26 - What A Drag!
 
On Sun, 28 Oct 2007 10:15:17 -0600, Vic Smith
wrote:

On Sun, 28 Oct 2007 10:38:41 -0000, Skip Gundlach
wrote:

Hi, Jeff, and Group,

I probably shouldn't continue with this, as my name is already mud


Nope. Many here appreciate your journals, even the snipers.
Just the nature of usenet.
My compliments to you for your level-headedness in handling them,
among your other travails.

--Vic


What he said.

Brian W

Brian Whatcott October 28th 07 06:25 PM

October 26 - What A Drag!
 
On Sun, 28 Oct 2007 12:15:04 -0400, "Ernest Scribbler"
wrote:

"Brian Whatcott" wrote
a tone so civil


Did you catch the PS at the end? I sometimes wonder if the people who post
evangelical "you must do as I say or you're a vile menace" rants are such
confrontational jerks in person. I hope not. Bob may be a treasure trove of
anchor wisdom for all I know, but when he comes off as just another troll
with a hard-on for Skip, the credibility meter takes a dip.


It was a benefit of the doubt thing. I know where you're comnig from.

Brian W

Mark Borgerson October 28th 07 06:45 PM

GPS Errors and Anchor watch; was: October 26 - What A Drag!
 
In article om,
says...
On Oct 27, 2:41 pm, Skip Gundlach wrote:
... I wasn't able to find any author by that name. However, I have,
now, read a 21-year-old text by that name and which had Earl
Hinz, as I offered in my reply before, as the author. ...


Earl R Hinz is one of my heroes. He is an extraordinarily talented
writer and researcher and has produced the seminal books on cruising
in Oceania based on his own trailblazing travels. You may disagree
with him, and there are a few thoughts of his that I take issue with,
but he deserves more than an ordinary amount of respect. The last
edition of _The Complete Book of Anchoring and Mooring_ came out in
2001. I have an older edition and I don't know if the new one
mentions the newer anchors but even if it doesn't the fundamentals
haven't been changed by them. I've been using a Spade for a few years
now and it is a good anchor, but it is used in the same way as the
Delta from which it was evolved. Not that anyone can learn to anchor
by reading books alone, but the Hinz book on anchoring is worth a read
and his articles and books on Pacific cruising are very good, indeed.
Of course, I think Bob is being silly, but I hope that won't put you
off Hinz.

On a more or less unrelated topic, I use my GPS for anchor watch all
the time. I've got a Furuno GP-31 and it has a simple graphic page
that displays a "bread crumb" trail. I find that I can see where I
dropped the anchor on that screen and put a goto point there. The
anchor watch alarm is then set to go off if I go outside a circle
around that point. While we sit at anchor the gps continues drawing
the track on the screen and pretty soon a thick arc is drawn. This
makes it very easy to see if we are dragging even if it is pitch black
and raining as it so often is when a front passes by in the night...

After reading other posts citing an apparent lack of precision in GPS
positions (probably related to weak signal strength in a forest), I
decided to do an experiment to determine GPS precision with a modern
WAAS-enabled GPS chip set.

Hardwa Prototype board from an oceanographic data buoy using a
UBLOX TIM-4A gps module. (12-channel receiver, WAAS enabled) Data was
stored on SD card on the board. GPS signals were received using an
outdoor antenna with a 25-foot cable connected to in indoor GPS
reradiator The GPS antenna connected to the UBLOX module was about 1ft.
from the reradiator. A Garmin GPSMAP 76C placed near the UBlox antenna
showed 8 satellites in view with near maximum signal strentgh on 6 out
of the 8 satellites. At that time the indicated precision on the GPSMAP
76C was about 10 feet.

Setup: GPS data was collected at 1-minute intervals for about 23 hours
starting at 1816Z 27 Oct. 2007. The data point collected was the most
recent of the 1Hz NMEA outputs from the GPS module. The data was NOT
averaged over the 1-minute interval.

Data Processing: The collected minutes North and Minutes East
were each averaged. Degrees North was 44 and Degrees East was 123
for all data points. The difference between each data point
and the appropriate average was computed for each minutes North and
minutes East point. The distances North and East of the average
position were computed using the relationships that 1 minute of
latitude equals 1 nautical mile and 1 nautical mile = 6000 feet. The
distances East or West of the average position were corrected
by multiplying the difference in degrees times the cosine of
the latitude. I believe the overall systematic errors in this
approach are less than a few tenths of a foot for each data point.

Once the North and East positions were calculated, the distance
of each point from the average position was calculated using
d = sqrt(PN * PN + PE * PE). (All calculations were done
using an Excel spreadsheet).

The position errors were then examined to see what percentage
of the positions fell within a specified distance from the
average position.

Results:

Maximum Position Error: 32.0 feet.
Average Position Error: 9.6 feet.

Percentage with error 10ft 60.2%
Percentage with error 15ft 83.9%
Percentage with error 20ft 96.4%
Percentage with error 25ft 99.5%
Percentage with error 30ft 100.0% (1366 out of 1367)


Conclusions:

1. With a modern GPS and a well-placed antenna, GPS precision
should not be a limiting factor for anchor alarms if you
are in an area with good WAAS corrections. You can
find some information about the precision increase with
WAAS he
http://gpsinformation.net/exe/waas.html

2. Anchor alarm radius has to account for swinging
to the anchor in normal winds and for the possibility
that the winds or tidal currents may set your boat
all the way to the other side of the anchor. These
factors may limit the usefulness of anchor alarms
in smaller anchorages or tight quarters.

3. Waking to the alarm with a wind or tide change is probably
preferable to setting the alarm radius so large it
will accomodate such changes.

4. GPS anchor alarms tell you nothing about the
position of other boats in the anchorage. In fairly
calm conditions, boats may respond differently to
the combination of wind and current. Bumps, thumps and
curses can ensue!

Mark Borgerson







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