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how do hydrographers/oceanographers detect hostile submarines?

2cool

Lantern Swinger
How do hydrographers/oceanographers detect hostile submarines?

Rather specialist question I know but difficult for me to find this information on the web
 

Topstop

War Hero
Hydrographers/Oceanographers map the Ocean floor to make Charts find wrecks etc.

TASOs or what ever they are called now have their boys,UCs or what ever they are called now, look for them using Sonar.
 

silverfox

War Hero
Moderator
Book Reviewer
It's a slight over egging of the HM trade. In order to use sonar to its full, you need to understand the environment in which it is operating. This includes water conditions and ocean bottom topography. The provision of such information is the job of the HM.
 

sgtpepperband

War Hero
Book Reviewer
While the principles of sonar and acoustic detection are the same for anti-submarine warfare, oceanography and sub-surface navigation, the frequencies that the various sensors/detection equipment use will vary, according to their role. Some are high frequency (and therefore low range) while others are low frequency (and thus high range).

With regards to detecting hostile submarines, some sensors are able to provide certain acoustic information while others will give something else. By combining information from various sources - including fixed or towed air, surface and sub-surface detection systems - the Principal Warfare Officer and Anti-Submarine Warfare Director will detect, track, interrogate and potentially attack the target as necessary (and evade detection and attack themselves, should the target become hostile).

Providing you understand the concept of what sonar is, how it works and what type of sensors are fitted to different classes of vessels, I imagine this will suffice for any Board or interview. You will not be expected to know the frequencies of them as this sort of information tends to be classified. As are most ASW tactics. Hence why it is difficult to find on the t'interwebs... :wink:
 

Ninja_Stoker

War Hero
Moderator
Reckon SF & SPB have just about summed-it for Sift purposes. If we relied exclusively on HM Officers for anything beyond data to help actually pinpoint a submarine (Or "target", as we prefer to call them), Topstop's on the money with this:

The big bang when the torpedo hits them.
 

Waspie

War Hero
How do hydrographers/oceanographers detect hostile submarines?

Rather specialist question I know but difficult for me to find this information on the web

They don't!!! They 'forecast' oceanographic conditions!!!

Sonar operators using masses of sensors detect submarines.

Like asking if a Meteorologist flies aircraft!!
 

Waspie

War Hero
While the principles of sonar and acoustic detection are the same for anti-submarine warfare, oceanography and sub-surface navigation, the frequencies that the various sensors/detection equipment use will vary, according to their role. Some are high frequency (and therefore low range) while others are low frequency (and thus high range).

With regards to detecting hostile submarines, some sensors are able to provide certain acoustic information while others will give something else. By combining information from various sources - including fixed or towed air, surface and sub-surface detection systems - the Principal Warfare Officer and Anti-Submarine Warfare Director will detect, track, interrogate and potentially attack the target as necessary (and evade detection and attack themselves, should the target become hostile).

Providing you understand the concept of what sonar is, how it works and what type of sensors are fitted to different classes of vessels, I imagine this will suffice for any Board or interview. You will not be expected to know the frequencies of them as this sort of information tends to be classified. As are most ASW tactics. Hence why it is difficult to find on the t'interwebs... :wink:

That brought back visions of ray path plotting!!!!! Not good!
 
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Sumo

War Hero
As an ex bender all the info above should suffice, if you need more military detail you will be given that as and when required in-service, security need to know basis.

You can Google sonars generally and get a feeling for frequency verses range and definition

Also note as a general rule Submarines do not transmit they just listen to all them noisy targets so as to comply with Topstops reasoning of the big bang theory, they are not known as the silent service for nothing.

The linky will give you an understanding of the sonar equations

DOSITS: SONAR Equation
 

Rumrat

War Hero
As an ex bender all the info above should suffice, if you need more military detail you will be given that as and when required in-service, security need to know basis.

You can Google sonars generally and get a feeling for frequency verses range and definition

Also note as a general rule Submarines do not transmit they just listen to all them noisy targets so as to comply with Topstops reasoning of the big bang theory, they are not known as the silent service for nothing.

The linky will give you an understanding of the sonar equations

DOSITS: SONAR Equation

Well shut the **** up
 

Sharkey

Banned
We had degrees of silence, on my last boat, a P boat, whenwe went quiet, shock mats were put down on the deck, all aux machinery that wasn’tneeded was switched off and all crew not on watch got in their bunks, on aBomber we just turned the movie down a notch.
 

2cool

Lantern Swinger
this has been a great thread for me to read ! Thanks for all your replies its all starting to make a lot more sense to me now
 

Waspie

War Hero
In a nutshell 2cool.

Helicopters go - 'Ping'

Submarines go -

Surface fleet rush around shouting and screaming and buggering up the sonar conditions!!!!
 
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