Cruisers Forum
 


Join CruisersForum Today

View Poll Results: Keeping celestial nav skills alive
Never learned, too many sight reduction books to haul around 18 8.22%
Plan to learn, on the "to do list" 80 36.53%
Learned, but no longer practice 56 25.57%
Learned, but only practice to keep the skills 50 22.83%
The hubby/wife does it 1 0.46%
Learned, practice every chance for that perfect pin wheel 14 6.39%
Voters: 219. You may not vote on this poll

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-02-2012, 12:20   #151
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,198
Images: 4
Re: The New and Improved Celestial Navigation Poll

My question,
your response,

I'd say we are slowly educating the masses. You don't need a race bred mono to sail fast.

Your best friends, was he the guy in the blue shorts and shirt in the picture standing behind Laura's boat?
__________________

__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 18-02-2012, 13:15   #152
Registered User

Join Date: Jan 2011
Location: PNW
Boat: custom teak ketch 48' Eastwind
Posts: 607
Images: 9
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by rebel heart View Post
Hey man. Was dodging this thread as to not get into an argument more than I already have.

I heard that celestial navigation was going to get pulled entirely, but that could just be a rumor. Probably is. Right now I think it's just for the Oceans endorsement which makes sense. If you stay near coastal (~200nm, I think) then coastal nav and electronics coupled with close proximity to shore will be good.

I can't imagine they'll ever let true sea captains off the hook from knowing celestial navigation. The first time the GPS system blinks for a second and "captains" don't know where to point the ship heads will roll like never before.

Personally I don't see why anyone would hold themselves to a lower standard as a mariner. A cruise ship captain has thousands of lives on his hands, and while the skipper of a yacht may only have a few, I'm sure they value their own lives and safety just as much as the thousands of folks on the cruise ship do. So why someone would expect and demand an upper tonnage captain to be competent and qualified in various aspects of navigation, but would excuse a lower tonnage from the same is beyond me.

I just saw a plastic Davis sextant for $30 used at a swap meet in my marina. Was in fine shape. So $30, a free PDF, and a couple weeks worth of independent study is too much bother for some folks? Shameful.

Once upon a time, I was the 1st Mate on a delivery from the south of France to Trinidad. The captain showed us all his 500 ton all oceans, all seas ticket to let us know he was in charge. A couple of days out from Gibraltar, I broke out my sextant to take a noon sight. I asked the skippy if he wanted to check my work - to make a long story short, he didn't know which end was up with a sextant!
This guy was a retired Navy/yacht delivery captain, very well known who has sailed all over the world for years without knowing a thing about celestial nav. "DR and a compass course is all I use."
__________________

__________________
Geoduck is offline   Reply With Quote
Old 18-02-2012, 21:36   #153
Senior Cruiser
 
rebel heart's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Posts: 6,190
Images: 3
Re: The New and Improved Celestial Navigation Poll

I just showed my wife the sextant and explained to her (briefly) how celestial navigation works. Her response:

"Sounds exhausting. No wonder everyone uses GPS."
__________________
rebel heart is offline   Reply With Quote
Old 19-02-2012, 09:30   #154
Registered User
 
familycruisers's Avatar

Join Date: Aug 2011
Location: On the boat
Boat: Westerly Centaur. 26'
Posts: 500
Send a message via Skype™ to familycruisers
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by Geoduck View Post

Once upon a time, I was the 1st Mate on a delivery from the south of France to Trinidad. The captain showed us all his 500 ton all oceans, all seas ticket to let us know he was in charge. A couple of days out from Gibraltar, I broke out my sextant to take a noon sight. I asked the skippy if he wanted to check my work - to make a long story short, he didn't know which end was up with a sextant!
This guy was a retired Navy/yacht delivery captain, very well known who has sailed all over the world for years without knowing a thing about celestial nav. "DR and a compass course is all I use."
Quote:
Originally Posted by rebel heart View Post
I just showed my wife the sextant and explained to her (briefly) how celestial navigation works. Her response:

"Sounds exhausting. No wonder everyone uses GPS."

That's some funny stuff right there!, I don't care who you are!
__________________
familycruisers is offline   Reply With Quote
Old 19-02-2012, 12:46   #155
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by s/v Jedi View Post
(...) Aiming for the center of an island group and hoping to sight them is gonna be the method for both sextant and compass/DR navigation. (...)
Yep. Given my sailing style (coward) nad astro skills (basic), if left without GPS I would aim for a tall island and sail the latitude with help from the sextant. Latitude - because if the GPS gets fried then who knows if our Casio watches were to be of any use. (We do not carry a mechanical chrono).

b.
__________________
barnakiel is offline   Reply With Quote
Old 19-02-2012, 13:28   #156
Registered User
 
Astrid's Avatar

Join Date: Oct 2008
Location: Northern British Columbia, part of the time in Prince Rupert and part of the time on Moresby Island.
Boat: 50-ft steel Ketch
Posts: 1,885
Send a message via MSN to Astrid Send a message via Yahoo to Astrid
Re: The New and Improved Celestial Navigation Poll

You really wouldn't even need the sextant if you had a floating disk of wood in a tub of water. You drew a series of concentric circles on the upper face of the disk and an upright pointer which would cast a shadow across the plate. As long as the shadow stayed within the pair of circles representing your latitude you were neither too far north nor south. By adding more circles or having a pointer that could be adjusted for height, you could use the instrument with several latitudes or seasons.
__________________
'Tis evening on the moorland free,The starlit wave is still: Home is the sailor from the sea, The hunter from the hill.
Astrid is offline   Reply With Quote
Old 19-02-2012, 13:55   #157
Senior Cruiser
 
rebel heart's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Posts: 6,190
Images: 3
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by Astrid View Post
You really wouldn't even need the sextant if you had a floating disk of wood in a tub of water. You drew a series of concentric circles on the upper face of the disk and an upright pointer which would cast a shadow across the plate. As long as the shadow stayed within the pair of circles representing your latitude you were neither too far north nor south. By adding more circles or having a pointer that could be adjusted for height, you could use the instrument with several latitudes or seasons.
Getting a good sight on a moving boat is hard enough. Shadows going across a floating disc in a tub just sounds like a benny hill skit.
__________________
rebel heart is offline   Reply With Quote
Old 19-02-2012, 14:11   #158
Registered User
 
Astrid's Avatar

Join Date: Oct 2008
Location: Northern British Columbia, part of the time in Prince Rupert and part of the time on Moresby Island.
Boat: 50-ft steel Ketch
Posts: 1,885
Send a message via MSN to Astrid Send a message via Yahoo to Astrid
Re: The New and Improved Celestial Navigation Poll

Worked well for Faeroe Islander fishermen in the 18th century and was possibly inherited from their viking ancestors; one just needs to have an occasional spell of sunlight and not too much rolling or pitching. It doesn't really help you to know how far east or west you are, but if you are not in a hurry.....
__________________
'Tis evening on the moorland free,The starlit wave is still: Home is the sailor from the sea, The hunter from the hill.
Astrid is offline   Reply With Quote
Old 19-02-2012, 16:56   #159
Registered User
 
familycruisers's Avatar

Join Date: Aug 2011
Location: On the boat
Boat: Westerly Centaur. 26'
Posts: 500
Send a message via Skype™ to familycruisers
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by rebel heart View Post
Getting a good sight on a moving boat is hard enough. Shadows going across a floating disc in a tub just sounds like a benny hill skit.
So if I use this method I'll have a bunch of chicks running around in their underwear? sweet!
__________________
familycruisers is offline   Reply With Quote
Old 19-02-2012, 17:34   #160
Senior Cruiser
 
IslandHopper's Avatar

Cruisers Forum Supporter

Join Date: Dec 2009
Location: Bundaberg Queensland/Lake Bolac Victoria, Australia
Boat: 45ft Ketch
Posts: 1,199
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by familycruisers View Post
So if I use this method I'll have a bunch of chicks running around in their underwear? sweet!
Try this method instead......

__________________
IslandHopper is offline   Reply With Quote
Old 19-02-2012, 18:21   #161
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by IslandHopper View Post
Try this method instead......
Or turn it around and let them do the work too:


ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 19-02-2012, 18:24   #162
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: The New and Improved Celestial Navigation Poll

p.s. For all of those that buy old Russian or Iranian sextants made from brass in wooden boxes etc. : for $0.99 you can just buy the iPhone app and be done with it



ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 20-02-2012, 11:59   #163
Moderator Emeritus
 
hummingway's Avatar

Cruisers Forum Supporter

Join Date: Jan 2010
Location: Gabriola Island & Victoria, British Columbia
Boat: Cooper 416 Honeysuckle
Posts: 6,933
Images: 5
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by Astrid View Post
Worked well for Faeroe Islander fishermen in the 18th century and was possibly inherited from their viking ancestors; one just needs to have an occasional spell of sunlight and not too much rolling or pitching. It doesn't really help you to know how far east or west you are, but if you are not in a hurry.....
Before the sextant it was astrolab, back-staff and cross-staff. Blindness was a hazard of use of the cross-staff so some enterprising fellow invented the back-staff. Keep going back in time and you find other devices used.

I think that people did get lost more often in those days.
__________________
“We are the universe contemplating itself” - Carl Sagan

hummingway is offline   Reply With Quote
Old 20-02-2012, 13:09   #164
Registered User
 
Astrid's Avatar

Join Date: Oct 2008
Location: Northern British Columbia, part of the time in Prince Rupert and part of the time on Moresby Island.
Boat: 50-ft steel Ketch
Posts: 1,885
Send a message via MSN to Astrid Send a message via Yahoo to Astrid
Re: The New and Improved Celestial Navigation Poll

Aren't the modern brass replica jobs (marketed through Stanely of London made in India and not Iran? Contemporary Russian ones, actually made for their Navy are knock offs of the Freiberger and are fairly decent if I understand correctly assuming they haven't been abused, dropped, etc.
__________________
'Tis evening on the moorland free,The starlit wave is still: Home is the sailor from the sea, The hunter from the hill.
Astrid is offline   Reply With Quote
Old 20-02-2012, 15:11   #165
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: The New and Improved Celestial Navigation Poll

Quote:
Originally Posted by Astrid View Post
Aren't the modern brass replica jobs (marketed through Stanely of London made in India and not Iran? Contemporary Russian ones, actually made for their Navy are knock offs of the Freiberger and are fairly decent if I understand correctly assuming they haven't been abused, dropped, etc.
I think you are right. I was just trying to say that the iPhone can be a sextant too for just 99 cents, using it's electronic sensors in combination with software. But I guess the iPhone and the sensors it has, is too unfamiliar for the sextant crowd in this thread...

ciao!
Nick.
__________________

__________________
s/v Jedi is offline   Reply With Quote
Reply

Tags
celestial navigation, navigation, poll

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:28.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.