(688i)How can I know target's depth?

lastautum · 07-22-09, 02:39 AM

Howdy all.

Can anyone tell me what is the best way to know a target's depth?

In 688i, I use sonar and TMA etc to find taret's bearing, range, speed.

But I don't know how can I detect the target's depth in gameplay?

goldorak · 07-22-09, 03:37 AM

You can't. Its just not possibile.
The most you would be able to infer is wether or not the contact is above or below a thermal layer. But beyond that, you have no way to know the target's depth.

Frame57 · 08-20-09, 09:33 PM

Try using your thermal layer. You can know if a contact is either above it or below it. Which becomes valuable information when using your weapons presets.

Nexus7 · 08-21-09, 06:26 AM

If between you and your contact there's a seamount, and you have a good guess of the range of your contact, you can use the seamount to have a raw contact's depth indication, changing your own depth. When the contact disappears from your sonar, mark your depth and then it's trigonometry...

depth(target) = depth(ownship) - distance(target)/distance(seamount)*(depth(ownship)-depth(seamount))

example:
depth(ownship)=800 feet
depth(seamount)=700 feet
distance(target)=7 nm
distance(mount)=5 nm

---> depth(target) = 633 feet

convoy hunter · 06-12-10, 02:46 PM

Quote:

Originally Posted by goldorak

You can't. Its just not possibile.
The most you would be able to infer is wether or not the contact is above or below a thermal layer. But beyond that, you have no way to know the target's depth.

thats why torpedoes have sonar

Cy-Fox · 06-13-10, 10:55 AM

Quote:

Originally Posted by convoy hunter

thats why torpedoes have sonar

Quoted for truth.

07-22-09, 02:39 AM	#1
lastautum Bilge Rat Join Date: Jul 2009 Posts: 1 Downloads: 34 Uploads: 0	(688i)How can I know target's depth? Howdy all. Can anyone tell me what is the best way to know a target's depth? In 688i, I use sonar and TMA etc to find taret's bearing, range, speed. But I don't know how can I detect the target's depth in gameplay?

08-20-09, 09:33 PM	#3
Frame57 Sea Lord Join Date: May 2008 Location: 1300 feet on the crapper Posts: 1,860 Downloads: 2 Uploads: 0	Try using your thermal layer. You can know if a contact is either above it or below it. Which becomes valuable information when using your weapons presets. __________________ "My Religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble minds." Albert Einstein

08-21-09, 06:26 AM	#4
Nexus7 Commander Join Date: Jun 2004 Location: Switzerland Posts: 469 Downloads: 2 Uploads: 0	If between you and your contact there's a seamount, and you have a good guess of the range of your contact, you can use the seamount to have a raw contact's depth indication, changing your own depth. When the contact disappears from your sonar, mark your depth and then it's trigonometry... depth(target) = depth(ownship) - distance(target)/distance(seamount)(depth(ownship)-depth(seamount)) example: depth(ownship)=800 feet depth(seamount)=700 feet distance(target)=7 nm distance(mount)=5 nm ---> depth(target) = 633 feet __________________ If you are going through hell... keep going (Winston Churchill) Last edited by Nexus7; 08-21-09 at 06:46 AM.*

07-22-09, 03:37 AM	#2
goldorak Admiral Join Date: Apr 2005 Posts: 2,320 Downloads: 0 Uploads: 0	You can't. Its just not possibile. The most you would be able to infer is wether or not the contact is above or below a thermal layer. But beyond that, you have no way to know the target's depth.