Sonar and radar usage

In my opinion the use of a radar should be avoided. I use only the Radar Warning Receiver (RWR) to notify me of incoming trouble at least temporarily

[RoaldLarsen]

Originally Posted by Captain Birdseye

Another quick question,

Am I right to have only one guy operating both the hydrophone and radio, by having him on the radio when surfaced, and hydrophone when not?

I believe that their ability to detect things depends on the current efficiency of the crew in the room, as indicated by the green bar at the top of the room. Having only one crewman in the room lowers the efficiency and therefore may tend to result in you missing things.

[Jimbuna]

Originally Posted by Captain Birdseye

Another quick question,

Am I right to have only one guy operating both the hydrophone and radio, by having him on the radio when surfaced, and hydrophone when not?

Have one at each of the two stations for optimum performance.

[Schroeder]

Originally Posted by Contact

The launch of a torpedo the same as door of torpedo tubes opening/closing should be also heard by hydrophone if ASW vessels crew is enough competent or elite I think.

I don't know. Did they constantly listen while steaming through the Atlantic? I think you can only hear things clearly when going rather slow (there are plenty of background noises in RL that aren't integrated in SH3 and 4). I guess that they were only listening when they thought that a U-Boat was near by. That would give us the option to strike first without warning. After they are alerted they should be able to detect torpedoes but not until then.

Originally Posted by Schroeder

I don't know. Did they constantly listen while steaming through the Atlantic? I think you can only hear things clearly when going rather slow (there are plenty of background noises in RL that aren't integrated in SH3 and 4). I guess that they were only listening when they thought that a U-Boat was near by. That would give us the option to strike first without warning. After they are alerted they should be able to detect torpedoes but not until then.

I think escorts were always listening with pasive sonar when guarding the convoy

[PavelKirilovich]

Escort vessels equipped with ASDIC and hydrophones always had those stations "full up" because contact with U-boats can happen at any moment. Not everybody makes night attacks as the manual says. The limiting factors with the efficiency of passive sonar and active sonar arrays in WWII were primarily hardware-based, you could only generate so much power and transmit it effectively, and you could only amplify sound so much because of the technology limitations of the time.

Flow-noise blankets the sensor and you have to be running below a certain speed to make use of your sonar systems. I haven't seen a convoy with merchantmen running too fast to be unprotected by ASDIC/hydrophone, but I have seen taskforces of RN and USN vessels moving so fast that I should have been able to sprint into a close range firing position, empty my tubes, and dive away without them knowing anything until my targets turned into raging infernos of suck. This was not the case, sadly.

You should be able to hear a torpedo launch (compressed air ejection) even if your sensor is mostly turned away from the launch point, because water doesn't compress and therefore carries sound energy (essentially miniature shockwaves) very well. You won't get a bearing, and you won't get any sort of reasonable range information (hard to estimate from passive plots anyways), and by the time you hear it the launch will have been long since completed and the boat will likely have repositioned itself. But you should be able to hear it.

Small mechanical noises like the torpedo doors opening you should be able to hear when you're monitoring a contact directly and the sonar conditions are favourable.

Sidenote: What depth does the game model the thermocline at? I hear things like 200-250m.

[BulSoldier]

IIRC the game itself doesnt model them, but sh3 commander does make random asdic max depth detection in order to simulate the thermal layers.(if that is what you mean?)

[PavelKirilovich]

That is what I mean. Thanks! Or Благодарности!, if I remember my very basic Bulgarian correctly.

[BulSoldier]

How nice of you and yes you are correct.

Originally Posted by PavelKirilovich

That is what I mean. Thanks! Or Благодарности!, if I remember my very basic Bulgarian correctly.

Благодарю more likely

[BulSoldier]

It is Благодаря actually but the word he used is just as right, may be not so much in use in daily conversations nowdays.

[PavelKirilovich]

Yeah, the Bulgarian I know is Yes/No/Thanks/Please/"No, sorry, I'm not interested in invading Romania today" and I'm joking about that last one. It was brought up in Russian class where we were discussing the differences between Tsarist-era Russian and Communist-era Russian, so if my Bulgarian is out of date I wouldn't be surprised.

Would one, when speaking Bulgarian, conjugate the word to match the Slavic "I/We/Them/Us/It/He/She" ending? "I thank you" (Ya "blagadarnostyu") or "We thank you" (Miy "blagadarnostyom") for example, or is it simply that the word has evolved with the language?

[BulSoldier]

Well it is like this about the word thank you (it is hard to translate in such manner)

I thank you - Благодаря ти or (Аз ти благодаря - but that sounds a bit odd and i think is gramaticly incorect)
We thank you - Благодарим ти

thats it for first person.In this case "I" (аз) in the beggining shouldnt be said.
It is a bit hard to explane since this is my native language and i understand it because this is how always was (to my perspective).

Howeever i think we are getting a bit offtopic here

<A voice from the distance> Hiiiiijackers!

[PavelKirilovich]

Bulsoldier: Not too dissimilar to Russian then. I understand. Thanks.

Contact: Well, at least you didn't say "pirates". I don't want to be shot by the US Navy in the Gulf of Aden in the middle of the night. (Booyeah. Recent events reference +10).