Protractor looks usefull - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 06-18-2009
davidpm's Avatar
Senior Member
 
Join Date: Oct 2007
Location: Madison
Posts: 3,675
Thanks: 165
Thanked 37 Times in 30 Posts
Rep Power: 7
davidpm is on a distinguished road
Protractor looks usefull

Amazon.com: Weems & Plath Marine Navigation Protractor Triangle with Handle: Sports & Outdoors

I just bought this protractor triangle and it seems to be very handy.
I've tried all the other products, parallel rules etc and they all work fine on a chart table.

The protractor triangle seems like it will work on a knee.
Just keep the chart folded to best place.
Put the hypotenuse of the triangle on your course line.
Line up the center convergence point with a vertical line.
Read the degrees on the outside edge of the scale on that same line.
Pick either high or low numbers for either coming or going.
For me I add 15 to get magnetic and I have a course within one degree.
Easier to read than unfolding the chart and finding a rose then walking something over.

I haven't tried it on a boat yet but it looks promising.
Reply With Quote Share with Facebook
  #2  
Old 06-18-2009
camaraderie's Avatar
moderate?
 
Join Date: May 2002
Location: East Coast
Posts: 13,878
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 15
camaraderie is a jewel in the rough camaraderie is a jewel in the rough camaraderie is a jewel in the rough
This is MY favorite tool...it is all you need to plot any course on any chart on any surface, or read a heading true or magnetic of a drawn course.
ANY of this can be done is 10 seconds or less with no other tools except a pencil and NO calculation. It is Weems protractor #255.

__________________
No longer posting. Reach me by PM!
Reply With Quote Share with Facebook
  #3  
Old 06-18-2009
Freesail99's Avatar
Senior Member
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Freesail99 will become famous soon enough
Send a message via Yahoo to Freesail99
Quote:
Originally Posted by camaraderie View Post
This is MY favorite tool...it is all you need to plot any course on any chart on any surface, or read a heading true or magnetic of a drawn course.
ANY of this can be done is 10 seconds or less with no other tools except a pencil and NO calculation. It is Weems protractor #255.

Cam is 100% right with this. I took his advice and bought the 255. It is fantastic !! Hands down the best tool for navigation.
__________________
S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #4  
Old 06-19-2009
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,393
Thanks: 0
Thanked 26 Times in 23 Posts
Rep Power: 11
Omatako will become famous soon enough
Yep, got the same one as Cam and Freesail. It revolutionised my plotting ability.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Share with Facebook
  #5  
Old 06-19-2009
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 3,063
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 9
Boasun will become famous soon enough Boasun will become famous soon enough
As a Professional Mariner, I prefer the triangle. Two of them in fact. I can plot faster with them then you can with parallel rulers.
But I do teach my students to use the triangle combined with the parallel ruler. Mainly because they are slow in picking up Nav Plotting at first. But their speed picks up in the second week.
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Maritime Instructor
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Rapture
Reply With Quote Share with Facebook
  #6  
Old 06-19-2009
Valiente's Avatar
Senior Member
 
Join Date: Jun 2006
Location: Toronto
Posts: 5,491
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
Valiente has a spectacular aura about Valiente has a spectacular aura about
Heh...I know that as a CPS plotter (Canadian Power Squadron).

I know how to use triangles and parallel rulers and even the old three-armed model, but 99% of the time I use the "CPS plotter".
__________________
Can't sleep? Read my countdown to voyaging blog @
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #7  
Old 06-20-2009
Junior Member
 
Join Date: Jul 2005
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
dvideohd is on a distinguished road
These are the great tools that I refer non-sailing friends to when asking about sailing gifts... Simple things that last and are extremely useful....

--jf
Reply With Quote Share with Facebook
  #8  
Old 06-22-2009
jackdale's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Calgary, AB, Canada
Posts: 8,830
Thanks: 26
Thanked 35 Times in 32 Posts
Rep Power: 6
jackdale will become famous soon enough
I have used a Portland Plotter for years.



Jack
__________________
__________________
ISPA Yachtmaster Offshore Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203, 204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



All times are GMT -4. The time now is 10:03 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.