Closed Thread
 
Thread Tools Display Modes
 
Old 08-28-2016, 07:58 PM   #81
TF Site Team
 
ksanders's Avatar
 
City: SEWARD ALASKA
Country: USA
Vessel Name: LISAS WAY
Vessel Model: BAYLINER 4788
Join Date: Feb 2011
Posts: 3,931
Quote:
Originally Posted by Jeffrey S View Post
Well that's the whole point - how do you know how big to make the circle? Why not just make it 500', right?

And if it's a crowded anchorage and you want to make it as tight as possible, how tight is too tight?
I find that .04NM which is a 243' circle works almost all the time.

Thats not mathmaticvally derived, its experience derived.

I do not care wether that works out in theory, it works in real life.

And... There is no way I would use an APP, anybodies app for this function. Thats what my Furuno navigation system is for.
__________________
Advertisement

__________________
Kevin Sanders
Bayliner 4788
Seward, Alaska
www.mvlisasway.com
ksanders is offline  
Old 08-28-2016, 09:51 PM   #82
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,125
There's lots of member envy on this thread.
__________________

menzies is offline  
Old 08-28-2016, 09:59 PM   #83
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 7,379
I apologize. I mentioned DQ. AC/JS was instantly attracted. How was I to know it was their app. It seemed a cute name for a potentially useful device. Sorry.
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline  
Old 08-28-2016, 11:14 PM   #84
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by menzies View Post
There's lots of member envy on this thread.
Envy of?
Capt.Bill11 is offline  
Old 08-29-2016, 05:50 AM   #85
Guru


 
City: Full-time onboard
Country: USA
Vessel Model: Trawler
Join Date: Oct 2007
Posts: 937
Quote:
Originally Posted by BruceK View Post
I apologize. I mentioned DQ. AC/JS was instantly attracted. How was I to know it was their app. It seemed a cute name for a potentially useful device. Sorry.
The record shows that your first post in the thread was #50. My first post was #8. Little about this discussion was from your mention of DragQueen - it was about the original posting which was a copy of a newsletter item that I previously wrote.
Jeffrey S is offline  
Old 08-29-2016, 06:26 AM   #86
Guru
 
City: East Coast
Country: USA
Join Date: Dec 2013
Posts: 3,411
Quote:
Originally Posted by Jeffrey S View Post
So you set the anchor alarm with 75' of chain out at 130' - which is a pretty big over-estimate. Now given your GPS is 40' back from the bow, you're woken up in total darkness at 2 am. Your reliable anchor alarm/position indicator shows that you're 132' back from your anchor. Then 134'...136'...150'...and you are physically drifting backwards.

So now what do you do?

The wrong answer is to start your engine(s) and stop the drift. That's because you haven't dragged 1 inch. You're getting fooled by the GPS/bow double error. You're not dragging until at least 155'.

Reading and really understanding the little advertising piece might allow you to set the alarm properly in the first place because, yes, you would have started your engines in this scenario had it happened like this.
Jeffery, you would probably be more credible trying to prove your point by pointing out where you are right than just trying to prove someone else is wrong.

My boat is only 28' long. The only way I can get my GPS antenna 40' from my bow is to set it out behind the boat in the dinghy and I see little point in doing that.

I'm not saying your article (or advertisement) is incorrect, I'm saying that I don't see the need to get involved in trigonometry and calculations just to anchor my boat. Anchoring is as much art as it is science. Sure, it's science that makes it work and it's important to understand that science, but much like playing a violin, it's an art to put that science to work.

The procedure you replied to works for me and it's been working for me since I've had my boat. It may not be technically the "best", but anchoring a boat for the night is one of those things where "good enough" is all that's needed. If the boat is still where you anchored it the next morning, mission accomplished.
WesK is online now  
Old 08-29-2016, 06:34 AM   #87
Guru
 
City: East Coast
Country: USA
Join Date: Dec 2013
Posts: 3,411
Quote:
Originally Posted by Jeffrey S View Post
If you set an anchor alarm and the system draws a nice, perfect circle on your nautical chart, there's an error in what you're seeing. This is more noticeable in Maine where I first came across it.

Nautical charts are nearly always displayed with a Mercator projection. When the software developer throws up a perfect circle on the display, they're doing it too cheaply, probably using a built-in API call to draw the circle with a single function call. To do it right, the circle needs to be manually created because it too should be Mercator-projected - few developers understand the trigonometry and projection math needed to do this. Unless you're getting close to the equator, the circle will always look pretty squashed. And yet, they usually don't...
And if you have two flag poles a mile apart and they are perfectly vertical, they won't be parallel because of the curvature of the earth.

We are anchoring boats, not sending satellites to the moon. Some things are to trivial to worry about for anchoring a boat. Just the rise and fall of the water throws off our calculations unless we're anchoring on a farm pond.
WesK is online now  
Old 08-29-2016, 06:38 AM   #88
Guru


 
City: Full-time onboard
Country: USA
Vessel Model: Trawler
Join Date: Oct 2007
Posts: 937
Quote:
Originally Posted by WesK View Post
If the boat is still where you anchored it the next morning, mission accomplished.
I couldn't have picked two more appropriate words - mission accomplished.
Jeffrey S is offline  
Old 08-29-2016, 08:56 AM   #89
Senior Member
 
Fletcher500's Avatar
 
City: San Diego
Country: USA
Vessel Name: Chelsea Rose
Vessel Model: Helmsman 43 PH: on order
Join Date: May 2016
Posts: 352
Quote:
Originally Posted by WesK View Post
Jeffery, you would probably be more credible trying to prove your point by pointing out where you are right than just trying to prove someone else is wrong.
Fletcher500 is online now  
Old 08-29-2016, 09:24 AM   #90
Veteran Member
 
City: Langley BC
Country: Canada
Vessel Name: Shalady
Vessel Model: 1981 Cheerman 38 Europa
Join Date: Oct 2013
Posts: 64
Like many topics on this formum, a well meaning post has turned into a pissing match. Grow up you guys!
stanfromhell is offline  
Old 08-29-2016, 10:08 AM   #91
Guru
 
HiDHo's Avatar
 
City: Heartland
Country: USA
Vessel Name: Hi-D-Ho
Vessel Model: 1987 Krogen Manatee
Join Date: Feb 2012
Posts: 714
Stan, Anchor Alarm is watching a 50 footer anchor near you with a toy anchor attached to a shoe string rode with no scope !!
HiDHo is offline  
Old 08-29-2016, 06:58 PM   #92
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,125
FWIW - AIS of Saturday night's anchorage.
Attached Thumbnails
Click image for larger version

Name:	ais.jpg
Views:	50
Size:	20.1 KB
ID:	55726  
menzies is offline  
Old 08-29-2016, 07:38 PM   #93
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Country: USA
Join Date: Apr 2014
Posts: 5,422
Quote:
Originally Posted by stanfromhell View Post
Grow up you guys!
So says "stanfromhell".
Capt.Bill11 is offline  
Old 08-29-2016, 07:41 PM   #94
Senior Member
 
Drake's Avatar
 
City: Seabrook, Texas
Country: Independent Republic of Texas
Vessel Name: Small World
Vessel Model: Defever 50
Join Date: Sep 2014
Posts: 456
Quote:
Originally Posted by stanfromhell View Post
Like many topics on this formum, a well meaning post has turned into a pissing match. Grow up you guys!
Drake is offline  
Old 08-29-2016, 08:15 PM   #95
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,542
Quote:
Originally Posted by capt.bill11 View Post
so says "stanfromhell".
:d:d:d
psneeld is offline  
Old 08-29-2016, 10:35 PM   #96
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Country: Canada
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 3,221
I've been reading this, and it might be good for some to realize their holding tank smells just as bad as the other guys...no matter how righteous they feel.
__________________
"The most interesting path between two points is not a straight line" Murray Minchin
MurrayM is online now  
Old 08-30-2016, 06:25 AM   #97
Guru
 
menzies's Avatar
 
City: Jacksonville
Country: USA
Vessel Name: SONAS
Vessel Model: Grand Alaskan 53
Join Date: May 2014
Posts: 2,125
OK, I believe I started this thread so have the duty/right to ask a MOD to clean up this mess.

TYIA
menzies is offline  
Old 08-30-2016, 07:16 AM   #98
TF Site Team
 
Peter B's Avatar
 
City: Brisbane
Country: Australia
Vessel Name: Lotus
Vessel Model: Clipper (CHB) 34 Sedan/Europa style
Join Date: Jun 2008
Posts: 6,627
Send a message via Skype™ to Peter B
Even so, as the OP has got what he wants, the thread is now closed, until further notice.
__________________

__________________
Pete
Peter B is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 10:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012