Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Boat Design
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #16  
Old 01-29-2008, 10:51 AM
ted655's Avatar
ted655 ted655 is offline
Senior Member
 
Join Date: May 2003
Rep: 122 Posts: 641
Location: Butte La Rose, LA.
All that &**&% tax money we paid to get those satellites up there & you want a sextant???? If you want to be that "retro", build one!

I suppose you want to borrow my copy of Duttons also?
__________________
Ted says: If it has tits, tires, or a transom, there's gonna be issues!
Reply With Quote
  #17  
Old 01-29-2008, 07:16 PM
longliner45 longliner45 is offline
Senior Member
 
Join Date: Dec 2005
Rep: 505 Posts: 1,637
Location: Ohio
govt facillilitys are really poorly operated ,,most times loran towers used to go out regularly,,,,I dont want to depend on the govt for anything,,,,,,no pun intended but look at the New Orleans resque operation,,how could that have been botch so bad ,,cmon ,,reporters getting there in 4 wheel drive trucks ,,but military vehicals couldent ,,,,,no helos no food and water for weeks,cant count on no one ,,,,,,,,,longliner
Reply With Quote
  #18  
Old 01-29-2008, 09:38 PM
Landlubber's Avatar
Landlubber Landlubber is offline
Senior Member
 
Join Date: Jun 2007
Rep: 1506 Posts: 2,456
Location: Brisbane
I would still take the *@*tant to sea, who knows when the sats will be down. I was off New Caledonia once (during the Gulf War) and my 40 footer was showing 70 knots on the display, kind of fast I thought, so abandoned the rest of the messages too. Upon arrival into Noumea, the HarbourMaster informed me that we were at war with Iraq, and the satelites had been shut down for civy use.......the *@*tant was not actually used then, but it was still nice as a backup to the Furuno RDF (that I still have too, oh yeah Frosty, it does use batteries!!!!).

Just on another note, has anyone out there on planet earth actually been able to consistantly get anything better than about 5 miles using one on a yacht? I sat once in very calm waters in Fiji (Maloola Lie Lie island) and you can see the horizon from the anchorage, tried for days to do any better but to no avail. I reckon those that calaim to do 2-3 miles regularly are up themselves. However, 5 miles certainly takes you from navitating to piloting, so visuals come back into the game, and they are very hard to beat. Just wondering.......
__________________
"I do not know, what I do not know!"
Reply With Quote
  #19  
Old 01-30-2008, 12:14 AM
Frosty's Avatar
Frosty Frosty is offline
Senior Member
 
Join Date: May 2002
Rep: 1693 Posts: 5,849
Location: Thailand
5 miles? you did well there, I can do about 50, which is not much good trying to get into harbour but adrift in the Atlantic in a dinghy!!

By the way did you know that the Azimuth in Hong Kong is about 20 minutes passed 12 noon. I know I know, --the "about" bit is not good enough.
Reply With Quote
  #20  
Old 01-30-2008, 01:17 AM
Kay9 Kay9 is offline
1600T Master
 
Join Date: Oct 2006
Rep: 279 Posts: 616
Location: Central Coast Oregon US.
Weems and Path, C-Plath make some...Make sure you get the artificial horizion bubble, also you will need HO-249

Lets see here are some links.
http://www.landfallnavigation.com/celnav.html
http://celestaire.com/page11.html
Reply With Quote
  #21  
Old 01-30-2008, 08:18 PM
Landlubber's Avatar
Landlubber Landlubber is offline
Senior Member
 
Join Date: Jun 2007
Rep: 1506 Posts: 2,456
Location: Brisbane
For those interested, there are other tables beside 229 and 249.
Martelles tables are a very simple book, sure it is not as accurate as the air or sea tables, but , hey, they are a snack to use, and as state before, you are not going to do better than about 5 miles anyhow, these tables are sure better than that. have a gander if you do not have a copy.
__________________
"I do not know, what I do not know!"
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes



All times are GMT -5. The time now is 03:02 PM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net