Detected via Sonar Ping While Sitting Still?

Radtgaeb · 12-31-13, 12:56 PM

All;

After years of not playing any subsim whatsoever, I fired up SH4 a couple nights ago and it seems like I'm back to square one as far as learning how to approach. I set up my S18 for a task force approach, and I was only about 200-300yds out from the predicted track line, so I put 'er in park for about 45 mins in-game-time....

...then a destroyer came along, immediately pinged me, and game over. What gives? I wasn't moving at all, I didn't have my periscope or radar mass raised, he just...pinged me sitting still then nailed me.

Dread Knot · 12-31-13, 01:09 PM

Are you playing with any mods like TMO (Trigger Maru)? In that mod the Japanese can practically hear your heartbeat underwater.

swdw · 12-31-13, 01:34 PM

Active sonar can only be avoided by a thermal layer. Running silent, sitting still, etc are of no help. In fact, remaining still when you get pinged is basically asking to be sunk.

Silent running and sitting still only work against hydrophones (passive sonar).

Against active sonar you have to listen for the shift from long range pinging to short pinging. This means they've shifted from search to targeting. Best defense is going deeper, hoping you find a thermal layer, and timing their run to know when to kick her in the pants and apply a hard rudder.

Radtgaeb · 12-31-13, 01:58 PM

Yeah, I'm running TMO.

I guess my biggest question mark was...how did they evenknow where to ping if I didn't have engines running or any masts deployed to spot? How am I supposed to approach a convoy or TF if I'm going to be immediately spotlighted? I'd love a good, solid close approach guide and have scoured the forums for one but most only hit on plotting intercepts, not how to avoid getting yourself caught.

I feel like...back when I was in High School playing GWX on SH3 I never had this much frustration whilst trying to pursue a convoy.

Admiral Halsey · 12-31-13, 02:35 PM

Quote:

Originally Posted by Radtgaeb

Yeah, I'm running TMO.

Well there's your problem mate. TMO Escorts are basically omnipotent. In fact 99.99999999999999999999999999999999999999% of the time they'll find you the moment you get within range of them. Makes for a lot of fun escape stories though.

Radtgaeb · 12-31-13, 02:41 PM

Great. So what do you suggest? Escape stories are fun, but I'd also like tonnage. And SH4 vanilla is.....well, Sh4 vanilla.

12-31-13, 12:56 PM	#1
Radtgaeb Frogman Join Date: Mar 2007 Location: Muncie, IN Posts: 300 Downloads: 58 Uploads: 0	Detected via Sonar Ping While Sitting Still? All; After years of not playing any subsim whatsoever, I fired up SH4 a couple nights ago and it seems like I'm back to square one as far as learning how to approach. I set up my S18 for a task force approach, and I was only about 200-300yds out from the predicted track line, so I put 'er in park for about 45 mins in-game-time.... ...then a destroyer came along, immediately pinged me, and game over. What gives? I wasn't moving at all, I didn't have my periscope or radar mass raised, he just...pinged me sitting still then nailed me. __________________

12-31-13, 01:34 PM	#3
swdw Grey Wolf Join Date: Sep 2007 Posts: 921 Downloads: 75 Uploads: 0	Active sonar can only be avoided by a thermal layer. Running silent, sitting still, etc are of no help. In fact, remaining still when you get pinged is basically asking to be sunk. Silent running and sitting still only work against hydrophones (passive sonar). Against active sonar you have to listen for the shift from long range pinging to short pinging. This means they've shifted from search to targeting. Best defense is going deeper, hoping you find a thermal layer, and timing their run to know when to kick her in the pants and apply a hard rudder. __________________ "There are only two types of ships- submarines...... and targets" Unknown "you wouldn't catch me on a ship that deliberately sinks itself"- comment to me from a surface sailor. System: AMD 6300 3.5 GHz \| 32GB DDR3 \| SATA 300 320GB HD, SATA III 1TB HD, SATA III 1.TB HD \| ASUS Sonar DS sound card NVIDIA 1660 Super OC \| Windows 10

12-31-13, 01:58 PM	#4
Radtgaeb Frogman Join Date: Mar 2007 Location: Muncie, IN Posts: 300 Downloads: 58 Uploads: 0	Yeah, I'm running TMO. I guess my biggest question mark was...how did they evenknow where to ping if I didn't have engines running or any masts deployed to spot? How am I supposed to approach a convoy or TF if I'm going to be immediately spotlighted? I'd love a good, solid close approach guide and have scoured the forums for one but most only hit on plotting intercepts, not how to avoid getting yourself caught. I feel like...back when I was in High School playing GWX on SH3 I never had this much frustration whilst trying to pursue a convoy. __________________

12-31-13, 02:41 PM	#6
Radtgaeb Frogman Join Date: Mar 2007 Location: Muncie, IN Posts: 300 Downloads: 58 Uploads: 0	Great. So what do you suggest? Escape stories are fun, but I'd also like tonnage. And SH4 vanilla is.....well, Sh4 vanilla. __________________

12-31-13, 01:09 PM	#2
Dread Knot Ace of the Deep Join Date: Mar 2007 Posts: 1,288 Downloads: 85 Uploads: 0	Are you playing with any mods like TMO (Trigger Maru)? In that mod the Japanese can practically hear your heartbeat underwater.