I'm amazed that you were not in the Navy. From 1989 to 2011, I was in the SONAR field in three different rates over 22 years. Sonar Tech Submarines (STS), Ocean Systems Technician Analyst (OTA), and then Sonar Tech Surface (STG). One rate change was for medical reasons, and the second was the phasing out of OTAs into STGs. This is 3 of the 4 Sonar-based rates in the Navy. I have instructed this very class in almost the exact way you have drawn it out on the board. I've probably drawn the same diagram hundreds of times over the 22 years. As some have already mentioned in the comments, it's like being in Sonar School again. Well done. I can confirm the legitimacy and accuracy of this information since it is burned into the memory. I know this was uploaded years ago, but it's just as relevant today.
@FPSchazly
3 ай бұрын
well, thank you! Great to hear from you, and that's very nice of you to say. I'm an engineer so the math side of it comes easy.
@NeymanPearson
7 жыл бұрын
Very nice video! This is why i damn love this game. Things were modeled in game close enough to principles of the ray theory in hydroacoustics. For those who are intresting in how things work in details IRL, I would recommend helpful book called "Principles of Underwater Sound" by Robert.J.Urick, 1975.
@PH-G
7 жыл бұрын
this is very informative. thank you. goes to show how in depth dangerous waters really is!
@FPSchazly
7 жыл бұрын
thank you! it is quite in depth haha
@FPSchazly
7 жыл бұрын
i often play the game in depth too (bad pun attempt lol)
@coolboi996
3 жыл бұрын
Excellent video for those wanting to learn about the basics of layers in waters and how sound propagation is affected. Thank you!
@FPSchazly
3 жыл бұрын
Thank you and you're welcome!
@RiktigaFimpen
7 жыл бұрын
Awesome man ! Been waiting for something like this. I kinda had a hard time wrapping my head around convergent zones, but you nailed it for me.
@FPSchazly
7 жыл бұрын
thank you! very glad it helped
@philiproche1607
Жыл бұрын
Nice Video - I was a Sonar Tech in the US Navy in the early 80's - it was like being back in Sonar School in San Diego.
@FPSchazly
Жыл бұрын
Thanks for your service and thanks for the compliment! That means a lot
@ZoeSummers1701A
5 жыл бұрын
Please keep making more videos like this. It was a fantastic find and very informative. Maybe a follow up on how to use these tactically? Thanks so much!
@drinductor8150
4 жыл бұрын
Salinity also affects the speed of sound, albeit to a lesser extent.
@FPSchazly
4 жыл бұрын
Yes indeed, im pretty sure its just from salts weight, i.e. how it affects water density, not any other effect from salt
@MaxAttax
7 жыл бұрын
Awesome Video Love these Concepts Videos
@FPSchazly
7 жыл бұрын
thank you, glad you like them!
@pulz123
7 жыл бұрын
Hey Thank you sooo much for this Video! It is extremly helpful and informative!
@FPSchazly
7 жыл бұрын
Marcel Schulz glad it helped!
@yeapin2k269
Жыл бұрын
Good Video !
@FPSchazly
Жыл бұрын
thank you!
@wrdfanbasilone4139
7 жыл бұрын
amazing video! thanks!
@FPSchazly
7 жыл бұрын
you're welcome, glad you liked it!
@m.afsarali2520
3 жыл бұрын
Very much informative video. please post videos related to acoustic channel modeling. Please clear my doubt. What is the difference between shallow and deep sea model
@FPSchazly
3 жыл бұрын
thank you! unfortunately these videos are about the extent of my knowledge.
@szutok6
7 жыл бұрын
Very nice video! thx
@FPSchazly
7 жыл бұрын
+szutok6 glad you liked it!
@NyahEwan
7 жыл бұрын
Lol I’m using this to review for a marine science quiz tomorrow 😂
@FPSchazly
7 жыл бұрын
oh boy haha best of luck! if you get it wrong, just say a nuclear engineer explained it to you xD
@matiassolomon9318
4 жыл бұрын
How did it go?
@mccutcheogeoff
7 жыл бұрын
great video.
@FPSchazly
7 жыл бұрын
thank you!
@sonic-du1hw
4 жыл бұрын
wow,ocean acoustics!
@Psawhn
7 жыл бұрын
So, in C:MANO (strategy game, successor to Harpoon), ships and subs above the layer will automatically troll their towed array sonars below the layer for maximum coverage versus subs. I'm pretty sure this is something you can actually do in DW, but is it ever useful? This should let you search for subs that are below the layer with less chance of counter-detection, right? Taking this further; on subs with two towed arrays, is it possible to trail one array short and above the layer, with the other extended fully and below the layer?
@FPSchazly
7 жыл бұрын
yes, you can do that as a surface ship easily. the towed is pretty sensitive, so yeah it's useful. you can do it in the sub, too, but I usually (if not always) keep my submarine towed on the same plane. but it can be nice to dip it down to check without sending the whole boat down there. while as a 688(i) (and maybe others), you can technically stream two towed arrays in Dangerous Waters, but it is not at all realistic to do so, so I don't do it for that reason.
@Psawhn
7 жыл бұрын
Ahh, sounds cool! I've watched a lot of your videos but never seen it referenced, so I was curious. I was also wondering if it'd be a sneaky trick to try in multiplayer. Fair enough on using both towed arrays. Was it the Seawolf or 688i that had one "light" and one "heavy" towed? Would this be a role the heavier towed is good for, so you can troll under the layer without lowering your speed too much?
@FPSchazly
7 жыл бұрын
seawolf, 688i, and virginia all have two toweds where one is more sensitive meant for lower speeds and one is less sensitive meant for higher speeds. if you go slow enough, both should be able to dip beneath the layer, but i would always use the sensitive one unless you're moving at standard-full speed.
@dnranjit
4 жыл бұрын
Really nice video. Any idea of how a BT buoy finds a layer ?
@FPSchazly
4 жыл бұрын
Thank you! I imagine it drops a probe through the ocean and measures temperature and salinity as it descends to determine speed of sound
@billiejean3748
7 жыл бұрын
Cool video bro. I have a question, If I get Dangerous Waters should I play vanilla or RA or in what order, what would you recommend?
@FPSchazly
7 жыл бұрын
thank you! i would recommend playing some vanilla first to get the hang of things. the stock game has a steep enough learning curve and RA is even more difficult. the AI is a lot more aggressive. but if RA is your goal, I wouldn't spend too much time in vanilla, otherwise you'll have to spend a lot of time unlearning vanilla habits that will get you killed in RA (like me)
@billiejean3748
7 жыл бұрын
Is RA a necessity or is vanilla good enough? Does RA fix things and feels like an enhancement or is it just gimmicky?
@FPSchazly
7 жыл бұрын
if you want to play with many more platforms, get RA (as in, many more than just seven playable platforms). i wouldn't call RA necessity, but we're starting to get very much into opinion territory :)
@billiejean3748
7 жыл бұрын
But I need your opinion man :D Thanks a lot for the info 👌
@FPSchazly
7 жыл бұрын
oh ok, there's the magic word haha i can be literal, and "is this better" tends to mean objectively for me. in my opinion, RA is good. if you want to play multiplayer, a grand majority of people playing multiplayer are using RA. it adds a lot of platforms to play as: german type 212, virginia class, victor 3, sturgeon, skipjack, lada class, russian udaloy destroyer. it's good. the AI is a lot more aggressive, though. in vanilla, AI doesn't fire until they have full confirmation of what you are. in RA, the AI more emulates a real person, where they can kind of tell what something is without getting a full confirmation. i would recommend it.
@BestofBest30
7 жыл бұрын
Roger That "Sir" xD
@dixievfd55
7 жыл бұрын
I wonder if "surface duct" is how the layer is modeled in Silent Hunter 4. I go below the layer and creep along at 1 knot and still get found.
@FPSchazly
7 жыл бұрын
are you close to the thing that's detecting you when you get detected?
@dixievfd55
7 жыл бұрын
Within a few hundred meters. Destroyers of that era have to get pretty close to attack. The lesson is avoid fights in shallow water. I play with the Trigger Maru mod which ups the aggressiveness of escorts and also changes the AI so they will alert every other destroyer and plane within an hour's travel. In this particular situation, I was sent to photo recon Hiroshima and found the Hiryu. Stupidly I decided to sink her and the destroyer anchored with her totally forgetting all the active warship I had snuck past to get there. Well now they were all alert that a sub was in the area. Sometimes, when I am in deep water and below the layer, they get close enough that I can hear their alarm sirens.
@MsCrazyIvan
7 жыл бұрын
You are sure that in the simulator, the theory SSP is embodied in practice and corresponds to reality?
@FPSchazly
7 жыл бұрын
Most of it, yes. The game does model a layer. I don't think it models the deep sound channel, but it does model convergence zones.
@perfectionist7833
5 жыл бұрын
Hiccups rest was gr8 perfect
@Jp421JP
11 ай бұрын
How can you tell playing in the game if the bottom is Rock, mud or sand?
@FPSchazly
11 ай бұрын
There's no way as far as I know without loading the mission in the mission editor. But detection ranges will be drastically reduced.
@eduonkhl
7 жыл бұрын
Hi, I really want to play this game with the RA mod but I have the german version and it's not compatible. Is there a possibility to change that with an unofficial patch or something? I can't really find anything helpful on this topic without having to look through all game files. The official english version patch doesn't work, I just get an error message when starting the game, it's also more difficult as it's the retail version. Any suggestions on what I could do? Thanks in advance!
@FPSchazly
7 жыл бұрын
unfortunately, i am not familiar with this problem. I would suggest asking on the SUBSIM forums or on the Red Rodgers forum, which is the forum for RA.
@raoulduke806
7 жыл бұрын
have you ever considered joining the navy? joining a submarine crew?
@FPSchazly
7 жыл бұрын
i have, but it's not for me.
@icefire001
7 жыл бұрын
So I was reading through Red Storm Rising again. They speak of knowing how many Convergence Zones there are between a contact and themselves.. I cant quite figure out how they know this. Any clue on that one ?
@FPSchazly
7 жыл бұрын
+Matt Schuette they could potentially have some kind of database where they know signal strengths and when they should be which strength. It could also be related to bearing rate at such a long range given how loud the contact is. Not really sure
@icefire001
7 жыл бұрын
Any chance you'll ever host a multi-player session for your fans to act as target practice :)
@FPSchazly
7 жыл бұрын
i do play multiplayer from time to time, although it has been a while. i generally prefer cooperative-type gameplay, and multi-station cooperative is rather fun, too
@icefire001
7 жыл бұрын
FPSchazly That would be awesome too now that I think about it Wolfpack!
@FPSchazly
7 жыл бұрын
yeah, it is pretty fun! join my discord if you get a chance, it's like teamspeak but with (better) chat rooms. discord.gg/bWEKNNw
@jamespfp
7 жыл бұрын
Hey Chazly, are you still doing DW replays?
@jamespfp
7 жыл бұрын
And this video is excellent, thanks!
@FPSchazly
7 жыл бұрын
you're welcome! what do you mean DW replays?
@jamespfp
7 жыл бұрын
I mean, still recording them on an active basis, or are you flirting with Cold Waters now...? (Been a while since I checked ur uploads, is all....)
@FPSchazly
7 жыл бұрын
yeah, my plan is to do a good bit of cold waters. I've been doing some dangerous waters multiplayer missions, i have two missions from a few weeks ago (if that long) and I just did one the other night which will be going up this week
@jamespfp
7 жыл бұрын
I've been playing with the Mission Editor in DW a little. I might have something different for you to try in the near future.
@yasseralosaimi1635
7 жыл бұрын
But i think sand bottom the best not rocks and thanks for this lesson
@FPSchazly
7 жыл бұрын
without seeing any actual data, this is how the game modeled it. but I would expect solid rock to be better at bouncing sound than sand with water in between the sand grains and rocks and shells and random stuff in it.
@RiktigaFimpen
7 жыл бұрын
That is correct, and it follows the laws of logic. Sand and mud absorbs sound. That's why you'll want to angle the sound emitter (i.e. active sonar frex) towards the bottom if it's made of rock - and angle it towards the surface if the bottom is porous. That is at least what I've learned.
@yasseralosaimi1635
7 жыл бұрын
FPSchazly thank you 🌷
@yasseralosaimi1635
7 жыл бұрын
RiktigaFimpen thank you for this information 👍🌷
@FPSchazly
7 жыл бұрын
you're welcome!
@DumpsterFire2048
7 жыл бұрын
so if i fart 45 feet under water, you would probably smell it before you heard it...cool.
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