Sonar question

Sterlet392 · 12-04-09, 01:34 AM

I have a question about current sonar capabilities for anyone here who might have relevant experience. Can passive sonar detect a sail-powered vessel (not running under power)? I'm thinking about a typical pleasure craft, 30ft long, sleeps four. Would active sonar detect a sailboat as well or better than passive sonar?

Thanks in advance for any help you can give.

ETR3(SS) · 12-04-09, 09:37 AM

If it's not making noise, you cant hear it on passive. You might pick up the flow noise of the water around the hull but it might just sound like normal surface action. Active sonar can find anything on the other hand as it sends out a sound pulse and you wait for the sound to be reflected off the contact. You can't classify a contact that way but at least you know something's there.

MikeVictor · 01-19-10, 07:55 PM

When I try to move the sonar direction dial (the one on the right) it will not move using the mouse on the dial face or by moving the handle below.

I'm using SH4 1.5 with TMO and RSRD and several small mods.

It works on some boats, but not the GATO and a few others.

Perhaps one of the mods screwed it up??? Any idea on how to reconfig a file so the sonar direction dial setting can be changed manually

Mike

ETR3(SS) · 01-19-10, 10:22 PM

I would start by posting this in the SH4 Mods forum. You won't get much help with your problem here.

ME$$ENGER · 01-19-10, 11:34 PM

I have another random question about passive sonar/hydrophone. What would happen say if the sonarman happens to hear the explosion of a depth charge near the submarine? Will it cause permanent hearing damage?

ETR3(SS) · 01-20-10, 11:26 AM

Being a sonar tech, you will have long term hearing loss anyways. But if you're being depth charged chances are you would turn down the volume so just that sort of thing doesn't happen. Or you could just take off the headphones.

12-04-09, 01:34 AM	#1
Sterlet392 Bilge Rat Join Date: Jan 2008 Location: Seattle, WA Posts: 1 Downloads: 1 Uploads: 0	Sonar question I have a question about current sonar capabilities for anyone here who might have relevant experience. Can passive sonar detect a sail-powered vessel (not running under power)? I'm thinking about a typical pleasure craft, 30ft long, sleeps four. Would active sonar detect a sailboat as well or better than passive sonar? Thanks in advance for any help you can give.

12-04-09, 09:37 AM	#2
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	If it's not making noise, you cant hear it on passive. You might pick up the flow noise of the water around the hull but it might just sound like normal surface action. Active sonar can find anything on the other hand as it sends out a sound pulse and you wait for the sound to be reflected off the contact. You can't classify a contact that way but at least you know something's there. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

01-19-10, 07:55 PM	#3
MikeVictor Seaman Join Date: Feb 2008 Location: Alexandria, VA near Washington DC, USA Posts: 36 Downloads: 407 Uploads: 0	Can't get it to move? When I try to move the sonar direction dial (the one on the right) it will not move using the mouse on the dial face or by moving the handle below. I'm using SH4 1.5 with TMO and RSRD and several small mods. It works on some boats, but not the GATO and a few others. Perhaps one of the mods screwed it up??? Any idea on how to reconfig a file so the sonar direction dial setting can be changed manually Mike

01-19-10, 10:22 PM	#4
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	I would start by posting this in the SH4 Mods forum. You won't get much help with your problem here. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

01-20-10, 11:26 AM	#6
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	Being a sonar tech, you will have long term hearing loss anyways. But if you're being depth charged chances are you would turn down the volume so just that sort of thing doesn't happen. Or you could just take off the headphones. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

01-19-10, 11:34 PM	#5
ME$$ENGER Watch Join Date: Sep 2005 Posts: 27 Downloads: 14 Uploads: 0	I have another random question about passive sonar/hydrophone. What would happen say if the sonarman happens to hear the explosion of a depth charge near the submarine? Will it cause permanent hearing damage?