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Same with ships and subs above the layer and you under it,
The duct is the area above the layer that tells how fare sound will go,
The stronger the layer is the more of the sound spectrum bounces from it,
The stronger the duct is the farther sound waves will go.
The thermal layer, or thermocline, as it is also known, is a thin but distinct layer in the ocean where temperature changes more rapidly with depth than it does in the layers above or below.
The duct is the channel in between the surface and the layer.
It would take a wall of text to explain how this can be used to your advantage in game in a way that makes it understandable.
In stead, check out Jive Turkey's video on "SVP (Sound Velocoty Profiles) and Shadow Zones" on YouTube.
In this tutorial, you get a very through walk through of all you need to know.
- Dolphin 38
And the ideal place to hide from surface vessels (or subs above the layer) is just below the layer - say 30'-50' so your sail is not breaking into the layer.
No. The ability of the sensors has nothing to do with the layer.
The layer and the duct determine the acoustic environment that you use.
With the duct, think of it as a pipe you shout into. A strong duct makes the shout go much farther. You would use the duct to hear things like surface ships from much farther away, allowing you to track them at a much greater distance, so long as you yourself keep quiet.
The duct can also work in reverse, if you make noise, the noise you make will be heard from farther away.
The Layer works as a wall. Sound waves are reduced or reflected off this wall. What this means is that say, a surface ship using active sonar lets out a ping. Near or below the ship, the sonar ping will penetrate the layer and travel into the depths. But after a few thousand yards, the sound pulses will reflect up off the layer and back to the surface.
Think of it as how you see reflections on a calm lake. If you look straight down into the water next to you, you can see things like the bottom, or fish, or a discarded fishing pole from some litterer. But as you look further out, the water's reflection shows the shore in the distance, as well as the sky and the clouds. You can't see the fish or anything else that's below the water. Likewise, when you are under water, you can't quite see anything above the surface past a certain distance. It's just reflected patches.
The Layer does this, but for sound. So if you have a surface ship pinging active, you would dip just below the layer so that any active pings thrown your way reflect off the layer and keep going, hiding you from sonar. Or you would get above the layer so your own sound is harder to hear from other submarines.
What better sensors on things like the Seawolf do is just make them more sensitive to smaller sounds. While this can translate into better sensitivity through the layer and duct, it is out of sheer sensitivity to what gets through, not any special magic.
Ultimately, what you want to do with the Duct and the Layer is utilize them as part of your active movement. As others said, you'll want to get into the Duct and above the layer to listen for surface ships a long ways away and prepare your attack. Then, you want to dip below the layer by about 50 or so feet to get your sail below it, then commence your attack so the enemy has a harder time hearing your launch transient or torpedoes until it's too late.
The SSBN's has been added by modders, but then as SSGN's carrying TASM's and TLAM's in the place where the nukes normally would go.
The way the game is set up, nuking land targets is not an addable feature...
Check out the Playable Subs Mod over at GitHub if you are interested.
- Dolphin 38
https://github.com/CaptainX3/CW-Playable-Subs#mod-installation-instructions
Ah-Ha....I wondered why half the time my hiding in the shadows failed me.
I didn't consider the fact that my sail was part of the problem. HolyJehosafat....
I'd bet that about 20% of the time I can watch torps zoom around me...I try for about 34 feet below the stated layer depth. And the other 80% of the time, the damn things find me and zoom on in towards me, so I have to put the coffee and cigarette down, go full out flank and dive dive dive...yank the rudder here and there....etc, etc.
Sadly, the layer gives no protection from torpedoes in game, as the torpedo sensors pick you up through the layer. IRL, hiding under a strong layer should hinder the torpedo in finding you. Problem is, IRL, torpedoes have different search logics to counter act the use of the layer, and the people manning the fire control, can also manually "drive" the torpedo in such a way that it searches both above and under the layer if contact is not accheived when the torpedo reaches the point where the sollution sais the target shoud be.
If you mange to get deep enough after you have loured the torpedo up shallow, or you are able to go shallow fast enough after louring it down deep, you might out fox it. But if you do, then you better circle above the circeling torpedo, makeing it hard for it's seeker cone to find you.
If you fool it and leave it behind shallow (or deep), and then start heading away quietly, you risk that the torpedo somhow manage to re-aquire you and again after a certain distance is covered.
I find this to happen, layer or no layer.
Also the effectiveness of the layer after the AI updates, are all but gone...
- Dolphin 38
Yeah, about on par with the Air force. Hydrodynamics and sonar seem just as complex as aerodynamics and radar. Lots of guided weapons, stealth, countermeasures etc. same as air combat. The biggest difference I'm guessing is lack of visibility with a submarine, a plane or helicopter pilot besides radar can fall back on visibility, especially with all the night and thermal vision. I'm not sure what they use as a back up for submarines.
Optics mast, prayer, and dead reckoning.
You raise your mast, pray nobody sees you, and if a torpedo lands in the water, you reackon you're dead.