Beta AAR - Trapped Under Ice (Full Version)

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acbennett3 -> Beta AAR - Trapped Under Ice (9/10/2013 7:09:47 AM)

This is an AAR of the included scenario "Trapped Under Ice".
In this scenario the US player has an improved 688 SSN (USS Hartford) and is tasked with hunting down and destroying
a Russian Typhoon class SSBN hiding under the ice. The Typhoon has an unknown number of SSNs protecting her.

Below is an image of the Hartford transiting to the Typhoon's identified operating area marked by the
reference points SSBN-1 thru SSBN-4. For the transit she is deep and moving at a good clip.



[image]local://upfiles/14934/850599969CBD4ACE827B8305190DF9D9.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:15:32 AM)

There are a number of ways the Hartford could search the operating area. One way is sprint and drift - transit to a point
in the op area deep and fast, then come up to just above the layer and slow to a crawl and listen. If nothing found go
deep and transit to the next point. Another method (the one chosen by the AI when I setup a generic ASW mission covering
the op area for this AAR) is to travel at 5knots just above the layer back and forth thru the entire op area.
The advantage of being just above the layer at a slow speed is the submarine's passive sonar can be listening above the
layer while the towed array can potentially drift below the layer and listen there. Nice theory - we'll see.

Below is an image of the Hartford now in the op area, just above the layer at 5kts.



[image]local://upfiles/14934/E610999350BA448F86BC5CCDF7951C78.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:17:33 AM)

A little while into the search the Hartford gets a hit on a submerged contact.


[image]local://upfiles/14934/E97104F7FD4847D0A39906DE3C060EEF.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:19:37 AM)

I let the AI/ASW mission control the Hartford at this point and it took the sub deeper and increased speed with the
goal of sprinting towards the contact. Apparently this speed change generated enough noise for the Russians to get
a whiff of the Hartford - and they promptly fired a torpedo down the bearing of their detection.


[image]local://upfiles/14934/9B7CB062D94840429327DE0639426EBB.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:22:18 AM)

The Hartford goes into torpedo evasion - go deep, flank speed and put the enemy torpedo on the edge of the baffles
(area in the water directly behind a submarine through which a hull-mounted sonar cannot hear).


[image]local://upfiles/14934/8BD1AB90371249D8A6C679BDC6BC5BC5.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:24:05 AM)

After the torpedo is finally out run/evaded, the Hartford turns and slows to see what is behind her.
She detects 2 submerged contacts in pursuit. The closest contact, and apparently firer of the evaded torpedo,
is well within the range of the Hartford's Mark 48 torpedoes so she fires. In response to the noise generated
by the launch the Russian fires another torpedo.



[image]local://upfiles/14934/4E7D23BF897846C98E80FDF84AFA4AC5.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:25:43 AM)

Both the Hartford and the Russian (later identified as an Akula class SSN) go into torpedo evasion.



[image]local://upfiles/14934/8BF399F7ABA94C3A98AFAB106CC1905D.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:27:32 AM)

The Hartford once again is successful in evading the enemy torpedo - probably because the Russian did not have a good fix
on her and was just firing down the bearing of the Hartford's torpedo. Unfortunately for the Russian she is unsuccessful
in evading the Hartford's Mark 48.

The Hartford then turns and slows again and eventually detects 2 submerged contacts remaining.
The closest is positively identified as a Sierra I class SSN. The other is still of an unknown
type - hopefully the Typhoon? Once again the Hartford launches a Mark 48 at the closest contact.



[image]local://upfiles/14934/2A30B1EC0C4443FBB300ACDB943C7AA0.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:29:16 AM)

Now things start to get a little crazy. The second contact is identified as a Victor III SSN - not the Typhoon.
Somehow the Sierra evades the Mark 48 and contact is lost. Then the Mark 48 which still has legs is steered towards
the Victor III. Then, not paying attention to the Mark 48, the Hartford almost drives into the torpedoes acquisition cone.
At the last minute I steer her away.


[image]local://upfiles/14934/97E73E843521422DBB87EEA6319FBCB8.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:33:13 AM)

Ironically, while in the Navy I actually saw this happen once in the trainer.

After clearing the Mark 48 cone, it continued on and acquired the Victor III.
In the meantime the Sierra was redetected nearby and the Hartford immediately fired another Mark 48.



[image]local://upfiles/14934/B84EAB7B7EB0407D905C9552CCF11601.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:35:32 AM)

Somehow the Victor III evaded the Mark 48, but the Sierra had no such luck.



[image]local://upfiles/14934/696D83D9F42B48F7A10F980148E7109D.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:37:21 AM)

Now the count was 2 SSNs down, a Victor III nearby, and the Typhoon SSBN still not detected.
The Hartford turns towards the last known bearing of the Victor III and starts the search again.
After a bit of time a torpedo appears on sonar. Based on the 32min old last location of the Victor III
I assume the torpedo came from her and she is close aboard again - but I have no real contact on her.
Therefore I fire a torpedo down the bearing of the enemy torpedo in response.



[image]local://upfiles/14934/7438F10B895E497693A80998B36D63F7.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:39:08 AM)

This is called a snapshot and is done to try to at least shake up the firer of the torpedo and force them into evasion also
and prevent another launch. The enemy torpedo is evaded, but in the meantime the Mark 48 never detects/acquires an enemy
submarine. Based on later events and review of the recording, I believe this torpedo came from the as of yet undetected SSBN.
The Victor III was probably exiting the area at high speed.

The Victor III was never redetected so I put the Hartford back into a search pattern in the general direction of the last
location of the Victor III. After a short amount of time a new submerged contact is detected south of the Hartord. She turns
towards the contact and fires a Mark 48. After a little more time the contact is identified as an SSBN - finally. Based on
previous Mark 48 misses and the Typhoon being double hulled, the Hartford fires another Mark 48 to ensure the kill.


[image]local://upfiles/14934/7886A6CA077A4553AC617AD7989BF861.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:40:33 AM)

The SSBN attempts to evade the Mark 48's. Here we see her running for her life with two Mark 48's locked on and hot on her tail.



[image]local://upfiles/14934/D7565CA0C87D455CB42E3C4D29417764.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:42:36 AM)

The first Mark 48 gets the kill. The goal of the scenario is achieved and it ends and presents the results screen.


[image]local://upfiles/14934/7234C24669E24C16BA4D4AE84602DADD.jpg[/image]




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:45:00 AM)

This was a fun scenario - especially with my background in submarines. I am not proud of my performance and felt
I got lucky a number of times. In the end the sprint/drift search is probably the better method. After finally
contacting the Russians, they should have been approached in a more stealthy manner. Instead the Hartford lost
the element of surprise and the Russians got the first shot - but luckily not an accurate one. The Hartford was
successful in evading a number of torpedoes - but on the other hand at least 2 of the Mark 48's missed their targets.
While not paying attention I almost drove in front of my own torpedo. In another case I inadvertently cavitated,
drawing a snapshot from the Victor III.

I feel like I am back in the trainer at sub school getting ripped by the reviewing officer…




Dimitris -> RE: Beta AAR - Trapped Under Ice (9/10/2013 7:49:14 AM)

Nice AAR! Really conveys the uncertainty feel.




JimMerson -> RE: Beta AAR - Trapped Under Ice (9/10/2013 11:07:38 AM)

My background is helicopters... So hunting subs is where I came from. This looks like a fun scenario though. Great report!

Jim




Ranger33 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 2:31:54 PM)

I don't really have much prior experience with this sort of game, and I know I will be in completely over my head, but I can't wait to play!




CapnDarwin -> RE: Beta AAR - Trapped Under Ice (9/10/2013 9:44:13 PM)

In the post mortem I'm not seeing any decoys/noisemakers for the US sub. Do you have to drop those manually or does the AI decide? Is the sub loaded out with them? I'm a bit rusty on the imp688, but I thought it has both.

Looking good though. Can't wait to play it myself!




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/10/2013 10:20:05 PM)

The counter measures are automatically deployed and if you look at the results screen above you can see the Russians released a few in their evasions. But I was watching the Hartford and she never released any. My conclusion is the Russian torpedoes never got close enough, probably because they never had a good lock on my position.




CapnDarwin -> RE: Beta AAR - Trapped Under Ice (9/11/2013 12:39:48 AM)

Fair enough. Post #7 is the only shot showing a Russian torpedo with your sub in the "range" of its HF sonar. What is the range for counter-measure deployment typically? Can I release manually in game?

Thanks.




acbennett3 -> RE: Beta AAR - Trapped Under Ice (9/11/2013 5:50:30 AM)

Just reviewed the recording at the point of Post#7 - the torpedo could be anywhere within the area enclosed by the yellow triangle. Because the torpedo is in the baffles/aft of the propellers it is hard to get an exact fix. The furthest point of the triangle is 2.85nm/approx. 5500 yards. Using the builtin range/bearing tool to determine the distance.

Moving forward approximately 4 secs (see below image) the closest estimated position of the enemy torpedo is moved back to approximately 1.6nm/3000yards. Identifying the exact location of a torpedo directly aft thru the propellers is extremely hard. You also again see the power of the recording functionality to review/reconstruct what happened during the play through.
Therefore there is a good chance the torpedo did not actually get close enough to trigger the automatic deployment of counter measures.

As for manually firing counter measures - I have not found a way to do that but that doesn't mean its not possible. Sunburn?





[image]local://upfiles/14934/8F8F3B7E383140CDB0F12293D0B89941.jpg[/image]




Dimitris -> RE: Beta AAR - Trapped Under Ice (9/11/2013 5:55:37 AM)

All weapon countermeasures are handled automatically the crew during weapon endgame.

There is a special decoy category (mobile ones like MOSS and MG-74 Korund) which, like their air-launched counterparts (TALD, Sampson etc.) can be launched on player command in order to offer an additional target to the enemy.




RockKahn -> RE: Beta AAR - Trapped Under Ice (9/13/2013 4:36:17 PM)

Reading this AAR brings back memories of my playing Microprose's Red Storm Rising. I was so hooked on that game for so long.

I'm really looking forward to this game's release.




trebcourie -> RE: Beta AAR - Trapped Under Ice (9/13/2013 5:27:22 PM)


quote:

ORIGINAL: RockKahn

Reading this AAR brings back memories of my playing Microprose's Red Storm Rising. I was so hooked on that game for so long.



One of my all-time favorites.




CapnDarwin -> RE: Beta AAR - Trapped Under Ice (9/13/2013 6:22:29 PM)

Can you steer the wire guided torps? Do the wires get fouled/cut if you go high speed or high turn rate? Or am I going to deep in the micro management of things? [:D]




Dimitris -> RE: Beta AAR - Trapped Under Ice (9/13/2013 6:22:52 PM)

quote:

ORIGINAL: BROJD
quote:

ORIGINAL: RockKahn
Reading this AAR brings back memories of my playing Microprose's Red Storm Rising. I was so hooked on that game for so long.

One of my all-time favorites.


Influenced us too [:)]




Dimitris -> RE: Beta AAR - Trapped Under Ice (9/13/2013 6:29:33 PM)

quote:

ORIGINAL: Capn Darwin
Can you steer the wire guided torps? Do the wires get fouled/cut if you go high speed or high turn rate? Or am I going to deep in the micro management of things? [:D]


If the torps have wire guidance you can manually drive them around, and if the wire guidance is two-way (not a given) you can use them as offboard sonars.

Cutting the wire is not yet implemented but we're aware of it and we want it [:D]




trebcourie -> RE: Beta AAR - Trapped Under Ice (9/13/2013 6:43:21 PM)


quote:

ORIGINAL: Sunburn

quote:

ORIGINAL: BROJD
quote:

ORIGINAL: RockKahn
Reading this AAR brings back memories of my playing Microprose's Red Storm Rising. I was so hooked on that game for so long.

One of my all-time favorites.


Influenced us too [:)]


You may have just made a sale!




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