Defeat Sonar

Armistead · 01-12-16, 02:34 PM

Most important things I've learned, know the AI and how it works, what factors work in your favor and which ones don't.

Active sonar or pinging only happens if you get in their sonar cone, stay out of it, but you're profile plays a big factor how well they get a fix on you, so stay skinny, during an attack, try to keep your nose towards the nearest escort.

They are virtually deaf in heavy seas.

In deep water, like most I go as deep as I can and hit flank and outrun the charges, this works 90% of the time, some of the Type A or B type escorts with multiple Y guns and double roll offs can be more difficult.

In medium depth, 300 ft or so, if faced with several, I will get deep as I can and blow tanks and hit flank as they start the run, blowing tanks make u rise very quickly and usually they fix in the depth zone you're in when they start the run...almost always they fall way under me, go back down after the run, rinse and repeat.

in shallow water, 150 ft or so, i stay at half knot, when they start the run, I hit flank reverse, seldom can you outrun the drop, I add a hard over turn as I reverse to clear my nose of a rear drop off...works most the time. Course nothing worse than getting caught in shallow water with several vet Type escorts that drop about 24 charges per run. If around 150 feet, I may blow tanks to get almost to the surface so they will fall under, but you have to be careful, cuz almost impossible to not breach...under a 100 ft, usually you do before u can get her going back down and get blasted some on the surface.
Smart skippers only attack in shallow water in heavy seas and I prefer some distance, 3-5000 yards and try to haul my arse out of the zone the torps spawned from where they will search about 1000 yard circle...

Majestik 909 · 01-22-16, 01:05 AM

T orpx - where you finding these thermal layers? I am yet to encounter any!

Rockin Robbins · 01-22-16, 07:47 AM

Sonar is defeated when the ship using the sonar is sunk! Beyond that--good luck. Torpx' guidelines are as far as you can go. Remember that when you are below a thermal layer the sound is not blocked. It is attenuated. So they can still track you if you are noisy.

We always talk about life in the sim being easier than real life sub warfare, but in the handling of thermal layers there's a wrinkle where we have it harder. Several times during the war, subs went below the layer and blew enough ballast so that the floated on top of the layer but were negatively buoyant in the water above. This let them shut down propulsion and ventilation systems with complete stability as they were surfaced as deep as the thermal layer. They could go completely quiet there. We don't have that option!

And now you know.....the rest.. of the story!

TorpX · 01-22-16, 08:51 PM

Quote:

Originally Posted by Majestik 909

T orpx - where you finding these thermal layers? I am yet to encounter any!

I usually encounter one between 100 and 200 feet. The depth they are at should be variable, but the game doesn't seem very good in this department.

Your crew should give you a verbal notice: "..passing thermal layer.."; that's all.

In SHCE, we had an actual bathythermograph, so we could see the depth, and amount of the temperature change. That was sweet.

And RR is right. They don't make you silent or undetectable. You shouldn't rely on them too much.

Majestik 909 · 01-22-16, 10:13 PM

Interesting! My crew has never advised of this....usually they say "Sir! We are diving too deep!"

I too have used all back emergency and some pretty dramatic "Y" turns, especially when attacking destroyers.

Ditto on blowing ballast to make dramatic depth changes.

Interestingly, I have had the best luck attacking destroyers from dead-ahead and dead a stern...attacking while submerged and using sound contact for targeting.

01-12-16, 02:34 PM	#1
Armistead Rear Admiral Join Date: Dec 2008 Location: on the Dan Posts: 10,880 Downloads: 364 Uploads: 0	Most important things I've learned, know the AI and how it works, what factors work in your favor and which ones don't. Active sonar or pinging only happens if you get in their sonar cone, stay out of it, but you're profile plays a big factor how well they get a fix on you, so stay skinny, during an attack, try to keep your nose towards the nearest escort. They are virtually deaf in heavy seas. In deep water, like most I go as deep as I can and hit flank and outrun the charges, this works 90% of the time, some of the Type A or B type escorts with multiple Y guns and double roll offs can be more difficult. In medium depth, 300 ft or so, if faced with several, I will get deep as I can and blow tanks and hit flank as they start the run, blowing tanks make u rise very quickly and usually they fix in the depth zone you're in when they start the run...almost always they fall way under me, go back down after the run, rinse and repeat. in shallow water, 150 ft or so, i stay at half knot, when they start the run, I hit flank reverse, seldom can you outrun the drop, I add a hard over turn as I reverse to clear my nose of a rear drop off...works most the time. Course nothing worse than getting caught in shallow water with several vet Type escorts that drop about 24 charges per run. If around 150 feet, I may blow tanks to get almost to the surface so they will fall under, but you have to be careful, cuz almost impossible to not breach...under a 100 ft, usually you do before u can get her going back down and get blasted some on the surface. Smart skippers only attack in shallow water in heavy seas and I prefer some distance, 3-5000 yards and try to haul my arse out of the zone the torps spawned from where they will search about 1000 yard circle... __________________ You see my dog don't like people laughing. He gets the crazy idea you're laughing at him. Now if you apologize like I know you're going to, I might convince him that you really didn't mean it.

01-22-16, 07:47 AM	#3
Rockin Robbins Navy Seal Join Date: Mar 2007 Location: DeLand, FL Posts: 8,900 Downloads: 135 Uploads: 52	Sonar is defeated when the ship using the sonar is sunk! Beyond that--good luck. Torpx' guidelines are as far as you can go. Remember that when you are below a thermal layer the sound is not blocked. It is attenuated. So they can still track you if you are noisy. We always talk about life in the sim being easier than real life sub warfare, but in the handling of thermal layers there's a wrinkle where we have it harder. Several times during the war, subs went below the layer and blew enough ballast so that the floated on top of the layer but were negatively buoyant in the water above. This let them shut down propulsion and ventilation systems with complete stability as they were surfaced as deep as the thermal layer. They could go completely quiet there. We don't have that option! And now you know.....the rest.. of the story! __________________ Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS

01-22-16, 01:05 AM	#2
Majestik 909 Planesman Join Date: Dec 2015 Location: California Posts: 195 Downloads: 0 Uploads: 0	T orpx - where you finding these thermal layers? I am yet to encounter any!

01-22-16, 10:13 PM	#5
Majestik 909 Planesman Join Date: Dec 2015 Location: California Posts: 195 Downloads: 0 Uploads: 0	Interesting! My crew has never advised of this....usually they say "Sir! We are diving too deep!" I too have used all back emergency and some pretty dramatic "Y" turns, especially when attacking destroyers. Ditto on blowing ballast to make dramatic depth changes. Interestingly, I have had the best luck attacking destroyers from dead-ahead and dead a stern...attacking while submerged and using sound contact for targeting.