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Stupid question - submarine navigation
July 01, 2018, 01:33 PM
bubbatimeStupid question - submarine navigation
Stupid question of the day.
How do submarines navigate the oceans without running into under ground mountain ranges and shallow water? A combination of charts and sonar? Doesn't sonar give away your position, and thus, boomers are unlikely to use it unless necessary?
Do submarines use GPS guidance under water, and does it work under water?
Thanks
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July 01, 2018, 01:44 PM
mikeyspizzaIn 2005, the USS San Francisco ran into an undersea mountain at flank speed.
July 01, 2018, 01:46 PM
YooperSigsJust a guess: Extremely accurate underwater charts.
End of Earth: 2 Miles
Upper Peninsula: 4 Miles
July 01, 2018, 01:47 PM
rduckworCharts, periodic GPS fix, and onboard inertial nav systems.
Clancy man, Clancy!!!
RMD
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Remember: After the first one, the rest are free.
July 01, 2018, 01:51 PM
RHINOWSOReally big windows and underwater binoculars.
July 01, 2018, 01:53 PM
sigmonkeySomeone gingerly reaches their foot out front along the bottom of the ocean floor and "ooches" with their toes.
"the meaning of life, is to give life meaning" ✡ Ani Yehudi אני יהודי Le'olam lo shuv לעולם לא שוב! July 01, 2018, 01:53 PM
OKCGeneI think we have some retired submariners who will chime in. But to answer your question, they use INS, Inertial Navigation Systems, along with surely other newer top secret systems. INS, once programmed and set exactly, use gyros. As the days and weeks go by that degrades, I'll assume that a sub will sneak up to periscope depth and grab a fresh GPS fix and go again.
I think over many decades of sub operations, immense amounts of time and resources have been spent mapping the oceans, and those charts are pretty darn good.
I'm hoping some sub sailors will enlighten us to what they can legally say, I find it fascinating.
EDIT: I typed too slow, others have posted, but I'll leave my comments stand.
July 01, 2018, 01:53 PM
CD228I don't believe that GPS radio signals can penetrate very deep into water.
July 01, 2018, 01:54 PM
RogueJSKA guy in a crow's nest with a scuba tank and two-way radio.
July 01, 2018, 01:54 PM
.38supersigIt gets bit by a tiny shark and they have to cancel the entire mission.
July 01, 2018, 01:56 PM
RHINOWSOquote:
Originally posted by sigmonkey:
Someone gingerly reaches their foot out front along the bottom of the ocean floor and "ooches" with their toes.
July 01, 2018, 02:04 PM
sigarmsp226Big Ass Curb Scrapers.....
July 01, 2018, 02:05 PM
YooperSigsNeptune Massif in 3...2...1....
End of Earth: 2 Miles
Upper Peninsula: 4 Miles
July 01, 2018, 02:10 PM
DrDanWhy, Mr. Limpet, of course!
This space intentionally left blank. July 01, 2018, 02:14 PM
Pipe Smokerquote:
Originally posted by rduckwor:
Charts, periodic GPS fix, and onboard inertial nav systems.
Clancy man, Clancy!!!
RMD
Plus SONAR?
Serious about crackers. July 01, 2018, 02:16 PM
ZSMICHAELquote:
I think over many decades of sub operations, immense amounts of time and resources have been spent mapping the oceans, and those charts are pretty darn good.
Naval Oceanographic. Located right here at the Stennis Space Center in south Mississippi. Mine warfare is out there as well. A lot of this stuff is top secret.
LINK:
https://www.public.navy.mil/fl...ages/navo_home1.aspxJuly 01, 2018, 02:30 PM
chellim1quote:
Originally posted by mikeyspizza:
In 2005, the USS San Francisco ran into an undersea mountain at flank speed.
Why does it not surprise me that a boat named San Francisco was seriously off course?
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-rduckwor July 01, 2018, 02:38 PM
OKCGenequote:
Originally posted by chellim1:
quote:
Originally posted by mikeyspizza:
In 2005, the USS San Francisco ran into an undersea mountain at flank speed.
Why does it not surprise me that a boat named San Francisco was seriously off course?
I dunno. But there's some link to semen, whoops I mean Seamen. Yanno, Sailors! Or so the old joke goes.
July 01, 2018, 02:42 PM
LS1 GTOquote:
Originally posted by Pipe Smoker:
quote:
Originally posted by rduckwor:
Charts, periodic GPS fix, and onboard inertial nav systems.
Clancy man, Clancy!!!
RMD
Plus SONAR?
Sonar is like tracers for infantry.
Life moves pretty fast. If you don't stop and look around once in a while, you could miss it.
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The definition of the words we used, carry a meaning of their own...
July 01, 2018, 02:50 PM
ARMT Guyquote:
Originally posted by mikeyspizza:
In 2005, the USS San Francisco ran into an undersea mountain at flank speed.
They eventually got that boat back in service, ( well, at least it ran and could submerge some, ) but mostly for PR purposes.
A nose graft can do wonders.
"Also I heard the voice of the Lord saying who shall I send, and who will go for us? Then said I, here am I, send me."