Sonar sweeping

barney · 06-20-09, 04:59 PM

When I'm submerged in SHIV does the Sonar Officer constantly sweep? I think SHIII had a key for that.

Loud_Silence · 06-20-09, 06:36 PM

Yup, the sonarman is always sweeping by default. In fact, since fleet boats have the hydrophone head below the keel, they also sweep while on the surface, but with a limited effectiveness

Stealhead · 06-20-09, 07:08 PM

The hyrophone is not only on the keel have ever seen that thing on your port bow that spins? That is passive sonar for the deck and those balls at the bottom are transducers for the acitve sonar.

They sweep on thier own but they will only report a conact inside the "range" of the set you have at the time so if you listen yourself you may vaguely hear something the game wont alert you about.

The game is funny about the soundman giving updates though often you must keep clicking the tab that tells him to report nearst contact.

06-20-09, 08:41 PM

Stealhead wrote...

Quote:

They sweep on thier own but they will only report a conact inside the "range" of the set you have at the time...

I don't understand, what do you mean by this? Are you referring to tha max range of the sonar?

I recently passed a merchant while submerged and I could hear him on the sonar but my soundmen could not. The range was less than 3000yds. Funny, it was a modern tanker (10,000 tons) and it was anchored in the harbor but I could hear screws. I went and checked with the external camera and the screws were not turning(and he was not moving) but he was the only possible source around. There was no sonar line on the nav screen either although there was one in another direction for a warship. I am running stock SH4 v.1.5 with GFO Mod. I thought by v.1.5 most all the bugs were gone?

tomoose · 06-20-09, 09:47 PM

..not all the bugs are gone (wait 'til the rubber dinghy bumps into your hull,LOL). I haven't experienced the issue you describe but I never played 1.5 stock I went to TMO and RSRD immediately (that's what I had with 1.4). So perhaps it's just a 'stock' problem.

06-20-09, 10:04 PM

I just reinstalled SH4 and added the UBoat Missions. I had been running v.1.4 for about a year with TMO. I thought I'd run stock with GFO for a little while and see what it was like. The destroyers are just too easy after TMO! It might be about time to try RFB.

Platapus · 06-21-09, 07:48 AM

The sonar equipment on a Submarine is complicated but very interesting to study.

The "T" shaped piece of equipment is the pick up for the JP receiver. JP collects sounds in the audible frequency range

The two "balls" under the sub are actually two different sensors.

On the Starboard is the QB sensor and on the Port side is the JK/QC

These are used to collect sounds in the supersonic (inaudible) frequency ranges.

While both the QB and QC can be used for active "pinging", Normally only the QB is used. There is another system called NM which is only used to determine depth under Keel.

One thing I did not know was that the JP operator is not in the conning tower but in the Forward Torpedo Room. Gee Hollywood always has him in the control room.

A very good source about the different sonar systems on American Fleet Submarines can be accessed at

http://www.maritime.org/fleetsub/sonar/chap1.htm

I can, and have, spent hours reading these technical manuals. So glad such information is online.

Stealhead · 06-21-09, 12:09 PM

I dont know why in the world anyone would think that a hydryphone head is an air search radar.Unless of course you where unawre that the SD radar does not rotate and can be raised so that it can extend above the water when the sub is at periscope deapth.For some reason the head only spins on the surface and not underwater but that is no air search radar.Though it would be obvious to me that that is no radar it would be useless at such a postion.The SD radar is on top 3rd periascope(which no longer is used for optics the one most to the rear or the boat.)The SD radar does not sweep anyway.You are thinking you know Platapus and I are knowing we know.

Like Platpus said those are two diffrent type of device and they can both ping if the need arises they could also be retcacted inside the boat when not in use something that you cant do in SH4.All though that is not the olny type of sonar systems that where used there was also JT and WFA.The JT is pretty much the same as the JP head t was just larger and better with WFA there was also a super sonic transducer topside.Some WCA had a topside transducer but not all did.

Like Platpus said beter to read the data else where from an online source or book SH4 does not do alot of things correctly.It is not a very good source of information.Well Sh4 pretty much says nothing at all about most of the equipment in it.

Platapus · 06-21-09, 03:35 PM

A more realistic sonar (WCA stack) would be something I would really like in SH4. I think it would be great if there was a sub sim out there where the AI can take over the running of the ship and allow an in depth realistic sonar simulator.... but I am strange like that.

I used to play ATC simulators and if that aint strange, I don't know what is.

06-20-09, 04:59 PM	#1
barney Watch Join Date: May 2004 Posts: 23 Downloads: 14 Uploads: 0	Sonar sweeping When I'm submerged in SHIV does the Sonar Officer constantly sweep? I think SHIII had a key for that.

06-20-09, 09:47 PM	#5
tomoose Grey Wolf Join Date: Aug 2005 Posts: 930 Downloads: 23 Uploads: 0	No.. ..not all the bugs are gone (wait 'til the rubber dinghy bumps into your hull,LOL). I haven't experienced the issue you describe but I never played 1.5 stock I went to TMO and RSRD immediately (that's what I had with 1.4). So perhaps it's just a 'stock' problem.

06-21-09, 07:48 AM	#7
Platapus Fleet Admiral Join Date: Oct 2006 Posts: 19,402 Downloads: 63 Uploads: 0	The sonar equipment on a Submarine is complicated but very interesting to study. The "T" shaped piece of equipment is the pick up for the JP receiver. JP collects sounds in the audible frequency range The two "balls" under the sub are actually two different sensors. On the Starboard is the QB sensor and on the Port side is the JK/QC These are used to collect sounds in the supersonic (inaudible) frequency ranges. While both the QB and QC can be used for active "pinging", Normally only the QB is used. There is another system called NM which is only used to determine depth under Keel. One thing I did not know was that the JP operator is not in the conning tower but in the Forward Torpedo Room. Gee Hollywood always has him in the control room. A very good source about the different sonar systems on American Fleet Submarines can be accessed at http://www.maritime.org/fleetsub/sonar/chap1.htm I can, and have, spent hours reading these technical manuals. So glad such information is online. __________________ abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.

06-21-09, 12:09 PM	#8
Stealhead Navy Seal Join Date: Feb 2009 Location: Kentucky Posts: 5,421 Downloads: 85 Uploads: 0	I dont know why in the world anyone would think that a hydryphone head is an air search radar.Unless of course you where unawre that the SD radar does not rotate and can be raised so that it can extend above the water when the sub is at periscope deapth.For some reason the head only spins on the surface and not underwater but that is no air search radar.Though it would be obvious to me that that is no radar it would be useless at such a postion.The SD radar is on top 3rd periascope(which no longer is used for optics the one most to the rear or the boat.)The SD radar does not sweep anyway.You are thinking you know Platapus and I are knowing we know. Like Platpus said those are two diffrent type of device and they can both ping if the need arises they could also be retcacted inside the boat when not in use something that you cant do in SH4.All though that is not the olny type of sonar systems that where used there was also JT and WFA.The JT is pretty much the same as the JP head t was just larger and better with WFA there was also a super sonic transducer topside.Some WCA had a topside transducer but not all did. Like Platpus said beter to read the data else where from an online source or book SH4 does not do alot of things correctly.It is not a very good source of information.Well Sh4 pretty much says nothing at all about most of the equipment in it. Last edited by Stealhead; 06-21-09 at 12:35 PM.

06-21-09, 03:35 PM	#9
Platapus Fleet Admiral Join Date: Oct 2006 Posts: 19,402 Downloads: 63 Uploads: 0	A more realistic sonar (WCA stack) would be something I would really like in SH4. I think it would be great if there was a sub sim out there where the AI can take over the running of the ship and allow an in depth realistic sonar simulator.... but I am strange like that. I used to play ATC simulators and if that aint strange, I don't know what is. __________________ abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.

06-20-09, 06:36 PM	#2
Loud_Silence Planesman Join Date: Oct 2008 Posts: 193 Downloads: 0 Uploads: 0	Yup, the sonarman is always sweeping by default. In fact, since fleet boats have the hydrophone head below the keel, they also sweep while on the surface, but with a limited effectiveness

06-20-09, 07:08 PM	#3
Stealhead Navy Seal Join Date: Feb 2009 Location: Kentucky Posts: 5,421 Downloads: 85 Uploads: 0	The hyrophone is not only on the keel have ever seen that thing on your port bow that spins? That is passive sonar for the deck and those balls at the bottom are transducers for the acitve sonar. They sweep on thier own but they will only report a conact inside the "range" of the set you have at the time so if you listen yourself you may vaguely hear something the game wont alert you about. The game is funny about the soundman giving updates though often you must keep clicking the tab that tells him to report nearst contact.

06-20-09, 10:04 PM	#6
Urge Stowaway Posts: n/a Downloads: Uploads:	I just reinstalled SH4 and added the UBoat Missions. I had been running v.1.4 for about a year with TMO. I thought I'd run stock with GFO for a little while and see what it was like. The destroyers are just too easy after TMO! It might be about time to try RFB.