Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-02-2016, 21:25   #16
Registered User

Join Date: Feb 2014
Location: Niagara Falls
Boat: Westsail 32
Posts: 342
Re: US Navy bring back sextant

You people are talking about full size ships. This forum is about small craft--power yachts and sailing yachts.

A few years ago I was moored at Hinckleys marina in Savannah GA USA. Lots of long range cruisers stop in at Hinckleys for repairs. I was taking the US Power Squadron core navigation courses then. I did a small survey: I asked several long range cruisers who were passing through if their electronics had ever failed out in the middle of the ocean (eventually I asked about 12). Fully one quarter of them said yes, and had a story like, "Yes! Three years ago we came out of Fort Lauderdale after the boat show">Miami Boat Show and headed for the Azores. Three days out our electronics packed it in and we couldn't fix it. We dusted off the ol' sextants and navigated in to the Azores with them. We got new electronics there and went on....."

Small boat sailors absolutely need to know and be able to apply sextant navigation. And the standard of navigation for small boat sailors is, and always has been, pencil and straightedge on paper charts, everything else is an adjunct.

On a Navy ship, when your electronics fail, you call an electrician. Well, there is hardship. You just know he's going to be on the other end of the aircraft carrier and will take ten long minutes to get to you in his slow golf cart.....

In a cruising sailboat you can call for an electrician all you want...
__________________

__________________
Seymore is offline   Reply With Quote
Old 24-02-2016, 02:26   #17
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 3,537
Re: US Navy bring back sextant

Quote:
Originally Posted by Seymore View Post
In a cruising sailboat you can call for an electrician all you want...
Or these days just turn on one of the many other gps devices onboard, tablet, mobile..quick count I must have about 8 onboard. With many ways to get some charge though a battery would take you across and ocean turning on a couple of times a day. Times change.

Which isn't to say that it isn't a good idea having a sextant aboard, that's just a good idea without the need for any justification .
__________________

__________________
conachair is offline   Reply With Quote
Old 24-02-2016, 03:02   #18
Registered User

Join Date: Feb 2015
Location: Portugal W.Coast
Boat: Fun&sporty Cat but looking for the one....
Posts: 17
Re: US Navy bring back sextant

Quote:
Originally Posted by conachair View Post
Or these days just turn on one of the many other gps devices onboard, tablet, mobile..quick count I must have about 8 onboard. With many ways to get some charge though a battery would take you across and ocean turning on a couple of times a day. Times change.
Yes, and this is "the problem": Our cars, planes, boats, weapons are becoming GPS dependant

Redundancy is a major safety issue, and you/we have severall devices based in one sistem
Itīs like having two engines taking fuel from one empty tank
Redundancy should be diferent independent systems to to the same thing

A4
__________________
aqu4tro is offline   Reply With Quote
Old 24-02-2016, 03:08   #19
Registered User

Join Date: Sep 2013
Location: Alert Bay, Vancouver Island
Boat: 35ft classic ketch/yawl.
Posts: 931
Images: 4
Send a message via Skype™ to roland stockham
Re: US Navy bring back sextant

Quote:
Originally Posted by sailorboy1 View Post
Didn't work out well for us when I served in the Navy on a sub. We lost navigation and just wanted to go north for 6 hours till the satellite was due so we could reset the system. Too bad after that using the old school real reclaimable nav method we headed south.
Do they have special table with height above sea level in minus fig on subs? sorry could not resist
__________________
roland stockham is offline   Reply With Quote
Old 24-02-2016, 03:44   #20
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 3,537
Re: US Navy bring back sextant

Quote:
Originally Posted by aqu4tro View Post
Yes, and this is "the problem": Our cars, planes, boats, weapons are becoming GPS dependant

Redundancy is a major safety issue, and you/we have severall devices based in one sistem
Itīs like having two engines taking fuel from one empty tank
Redundancy should be diferent independent systems to to the same thing

A4
Long beyond "becoming"

Add to that list financial systems which use GPS for transaction timing, it's everywhere. Which is why the system is so robust and us sailors have other things to worry about offshore.
__________________
conachair is offline   Reply With Quote
Old 24-02-2016, 07:10   #21
Registered User

Join Date: Dec 2015
Location: Norfolk, Va
Boat: 83 Tanzer 27
Posts: 39
Re: US Navy bring back sextant

anytom, I am sure INS or something a little better is still in use. But the scope dopes (OSs) had that back in Combat. We QMs did the real naviguessing on the bridge (yes it was fun competition when we actual got a good fix who was closer). Long time ago and good memories. Middle east is not the same as it was in the 70s. Hats off to all service members and vets.

Ken
__________________
Our Tyme is offline   Reply With Quote
Old 24-02-2016, 08:59   #22
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jun 2010
Location: Mediterranean
Boat: Beneteau Oceanis 50
Posts: 280
Re: US Navy bring back sextant

Quote:
Originally Posted by avb3 View Post
The US navy, after a deca

U.S. Navy Brings Back Navigation By The Stars For Officers : NPR



Probably a smart move. I was surprised that their officers were NOT trained in its use, but like everything else, if they do no actually practice, how proficient will they be?

One thing, it means that sextant manufacturers are not going the way of the buggy whip.
Very good move. I believe they are also bringing back coal fired ships, cannon and cannonball. I heard the Royal Navy is bringing back bell bottoms on trousers for their sailors.
........as a safety consideration.
__________________
lordgeoff is offline   Reply With Quote
Old 24-02-2016, 09:00   #23
Registered User

Join Date: Nov 2013
Posts: 53
Re: US Navy bring back sextant

You can also use a sextant for measuring the distance from an object with a known height ie a lighthouse, and also a horizontal sextant angle when you have 2 known points ie headlands.
They really ought to bring back morse too. When you don't want anyone listening to what you want to say or your electronics are down, this system is really useful still
__________________
mikecambrai is offline   Reply With Quote
Old 24-02-2016, 09:00   #24
cruiser

Join Date: Jan 2016
Posts: 40
Re: US Navy bring back sextant

Quote:
Originally Posted by Ribbit View Post
There's another aspect.

This is sending a very big message to the Education system, to improve the mathematics competence of those leaving the Education system . . . . .


"mathematic" that you need for celestial navigation is mathematics for ten years old.
__________________
seaward 42 is offline   Reply With Quote
Old 24-02-2016, 09:03   #25
Registered User
 
rognvald's Avatar

Join Date: Jan 2011
Location: Summer: In the land of Wooly Mammoths
Boat: Pearson 34-II
Posts: 2,252
Images: 2
Re: US Navy bring back sextant

"But there is other value to bringing back the sextant. In addition to being one more "tool in the navigator's toolbox", fixing a ship's position from the stars is a part of our heritage, a mark of a professional seaman, and a way to signal a young kid from the Bronx or Iowa that they have joined a MARITIME organization. And that membership in an elite cadre comes with tradition and ritual...like knowing more than the average bear about noon sights and which star is Spica." Polar Opposite


Polar,
That was beautifully written! Best, Rognvald
__________________
"And those who were seen dancing were thought to be insane by those who could not hear the music."
Friedrich Nietzsche, Thus Spake Zarathrustra
rognvald is offline   Reply With Quote
Old 24-02-2016, 09:16   #26
Registered User
 
CaptNemoO2's Avatar

Join Date: Dec 2013
Location: Long Island
Boat: Beneteau Oceanis 510
Posts: 112
Re: US Navy bring back sextant

Quote:
Originally Posted by aqu4tro View Post
Yes, and this is "the problem": Our cars, planes, boats, weapons are becoming GPS dependant

A4
Not all weapons! The important ones still rely on inertial and celestial navigation, and good old ballistics!




Quote:
Originally Posted by Our Tyme View Post
anytom, I am sure INS or something a little better is still in use.
Can't speak for surface ships, but inertial navigation is still in use. Some are way better than others that don't require as many GPS corrections for gyro drift.


Sent from my SM-N920V using Cruisers Sailing Forum mobile app
__________________
CaptNemoO2 is offline   Reply With Quote
Old 24-02-2016, 09:26   #27
Registered User

Join Date: Aug 2011
Location: New York, New York
Boat: Dufour Safari 27'
Posts: 382
Re: US Navy bring back sextant

Two years ago the British MOD posted a warning that due to military exercises GPS may not be available (for a certain area) and worse, may give false readings.


It was idiotic for the Navy to stop teaching traditional navigation. All the branches have become too reliant on technology and have failed to provide back up solutions.
__________________
ArmyDaveNY is offline   Reply With Quote
Old 24-02-2016, 09:27   #28
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 6,051
Re: US Navy bring back sextant

Seems like good sense. The next war may be won. by electronics. Nav. is just one aspect,
can you imagine what bringing down the net. would do to the civilized world? Or part there of.
__________________
Cadence is offline   Reply With Quote
Old 24-02-2016, 09:59   #29
Registered User

Join Date: Feb 2011
Posts: 2,105
Re: US Navy bring back sextant

Its pretty clear to the military that EMP warfare is right around the corner. Plus solar flares someday will(not maybe) power down virtually all electronics. With satellite warfare coming on board, there is a scramble to provide earth based command and control systems. The Chinese already showed they can blow up a satellite in space from ground bases in China(did that about four years ago). Thus a lot of old stuff coming back on line like celestial navigation, vacuum tubes, and long wave comm systems.
__________________
reed1v is offline   Reply With Quote
Old 24-02-2016, 10:35   #30
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jun 2010
Location: Mediterranean
Boat: Beneteau Oceanis 50
Posts: 280
Re: US Navy bring back sextant

Quote:
Originally Posted by CaptNemoO2 View Post
Not all weapons! The important ones still rely on inertial and celestial navigation, and good old ballistics!






Can't speak for surface ships, but inertial navigation is still in use. Some are way better than others that don't require as many GPS coBrrections for gyro drift.


Sent from my SM-N920V using Cruisers Sailing Forum mobile app
I hope to god someone doesn't devise a way to jam Gravity or those bombs are not only going to be inaccurate ...... It will take forever for the bombs to reach the ground.....
__________________

__________________
lordgeoff is offline   Reply With Quote
Reply

Tags
navy, sextant

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale: U. S. Navy Sextant Mk II Gradyrod Classifieds Archive 0 13-06-2012 18:46
For Sale: US Navy MkII Sextant Gradyrod Classifieds Archive 0 03-01-2012 19:26
How to bring stiff lines back to life? ssullivan Deck hardware: Rigging, Sails & Hoisting 17 07-04-2008 13:09
1981 27 Tanzer is it worth bring back to life? bigjoe Construction, Maintenance & Refit 7 20-04-2007 06:49



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:31.


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.