1. #11
    At 8000 metres, yeah.
    But the crew resting in their bunks in a C2 chugging along 1700 metres abeam of you should hear the ping no problem.
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  2. #12
    Originally posted by Kaleun1961:
    This is interesting, as I've rarely ever read anything about this device. It must not have been widely used, else there would be much more known about it.
    I don't know, but I wouldn't necessarily count on that... It seems most books and other sources consider the war to end in '43 and hardly mentions anything that happened in the last year...

    I'm no expert by a wide margin, but I was under the impression that the 'total underwater warfare' concept of the last year of the war (submarines to remain submerged at all times) envisioned using active sonar or the periscope for torpedo fire control, depending on circumstances. Sure, sending out pings might give away your presence, if not your position, but so might sticking the scope up, and you have to attack somehow... Would be nice to know how much it was actually used though!

    FWIW, I have used it in the sim a few times for blind attacks on lone merchants in fog, and like it a lot! Took me a while to figure out the secret though: The range readout converges slowly to the actual range, so you need to send out many pings (a dozen or more) before you get an accurate reading! Keep sending pings repeatedly until the range is constant (except for small changes due to target motion), and then you have the correct range.

    Best,
    - B
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  3. #13
    Kaleun1961's Avatar Senior Member
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    I guess this can only be used with manual targeting? I've never done a late war patrol yet in this game. It seems that as I progress, a great new mod comes out, then I start afresh again in 39.

    This time around I am determined to go through one or more careers covering the whole war. If my guy gets killed in late 40, the new career starts then.
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  4. #14
    Ok, Im back.
    Interesting discussion.
    I think I can speak from some limited expirience in my time in the Navy in regards to being able to hear sonar while in a ship.
    I remember one time while in port in Norfolk I had duty (so I had to spend the night on board). There was an Arleigh Burke Destroyer moored behind us. I didnt know what it was at the time, but through out the night I kept hearing this most irritating sound which sounded like a chain link fence gate swinging back and forth and needed oil on the hinges. It was LOUD and crystal clear. Turns out they left their sonar on, or some silly mistake like that.

    At any rate our berthing was below the water line, however, there are always pumps, and A/C units and other noises going on somewhere that arent terribly loud but I think would make it difficult to distinguish from the sound of a sonar very far away. Even with todays sonar.
    If you could hear it I dont think it would be instantly recognizable at first but instead a sound in the back ground noise.
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  5. #15
    Kaleun1961's Avatar Senior Member
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    Interesting story, gunner. On the basis of what you and Irving report, I think I can accept that such a ping may indeed be audible. I'm not afraid to change my opinion if convinced by facts.
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  6. #16
    Originally posted by Kaleun1961:
    I guess this can only be used with manual targeting?
    As far as the S-gerät goes, yeah. But I have never tried the Nibelung in the XXI, so wouldn't know about that...

    Best,
    - B
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  7. #17
    Useless trivia: You can easily kill anyone diving near the ship if the sonar is operated.
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  8. #18
    Originally posted by Kaleun1961:
    Is it necessarily a bug? I don't know, but was it possible for someone inside a noisy merchant ship to hear such a ping? In a U-boat underwater, running quiet electric engines it is possible to hear such a pulse. I'm just wondering if the acoustic conditions on a merchant vessel were conducive to hearing such a sound. If they could hear such a pulse in reality but not in the game, then it is indeed a bug.
    It's entirely possible. When I was in the U.S. Navy, stationed onboard the USS Carl Vinson (CVN-70), we always had a couple of Los Angles Class SSNs with us. My berthing was located below the waterline of the ship, and one night one of them went active (sonar) while we were launching aircraft (a very noisy operation no matter where you areon the ship). The result was near deafening. In fact I have a permanent ringing in the ears from that day.
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  9. #19
    I shall assume CVN-70 is a carrier.

    How far away were the subs?
    I can imagine the hull acting a bit like a resonance box.
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  10. #20
    Kaleun1961's Avatar Senior Member
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    Originally posted by W.Irving:
    Useless trivia: You can easily kill anyone diving near the ship if the sonar is operated.
    Interesting. How does it cause death? Something to do with vibrations in the body? I've read elsewhere that large radar domes, like those on an AWACS plane can kill if you are not shielded from the microwaves. Any aviation personnel wish to comment on this?
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