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Indian Ocean Escort using SimPlot


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#1 kmart494

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Posted 22 November 2015 - 07:41 PM

I am playing the Indian Ocean Escort scenario from HNR'03 using SimPlot.  I am going to use many screenshots to help illustrate how SimPlot can be used to play H4.  I apologize in advance if this topic eventually takes too long to load.  :D

 

I will limit my posts and screenies to just relevant points in the game.  I will make one post per relevant turn.

 

Below is the starting position of all units (0600).  Because this area is heavy with civilian air and sea traffic, there will be additional neutral units that come and go within the game screen (which is between South Africa and Madagascar).  Civilian ships will use Nav Points R007 and R008 as shipping lane turning points.

 

turn0600.png

 

At 0600 + 2D6 a Russian Tu-95RT will enter from the North.  It can only stay around for two hours,  In the mean time, K-503 (Charlie II) will remain at periscope depth to await information from the Bear.

 

The 4 ship NATO task force (Iroquois and Halifax classes with two auxiliaries) will transit to Nav Point 2 then turn due North.  The threat level is considered to be minimal.  However, because of the heavy traffic, all ships will have their navigation radars on.  (I am making the assumption that all Navy ships have International Nav Radar sets and the task force was ordered to use them to avoid collisions.)  Other radars will be off just in case someone gets snoopy.



#2 kmart494

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Posted 22 November 2015 - 07:50 PM

Turn 0603.

 

The Bear has entered the game at High altitude.  Below is the Red side view only.  The Bear has two radar contacts and has classified them as Unknown.  He will go down and take a closer look.  The Bear will be at Low altitude at 0618.

 

turn0603.png



#3 kmart494

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Posted 22 November 2015 - 08:02 PM

Turn 0618.

 

The Bear has reached Low altitude (a requirement for getting ship class) but overshot a bit (using 3 minute turns).  I had him turn back and make a direct pass.  Just a neutral Tanker.  On to the next contact!  He has lost radar contact with it but still has a good idea of where it is.  He will remain at Low altitude until contact is re-established.

 

turn0618.png

 

I re-read the rules on visual sighting from the air and I think it may not have been necessary to go to Low altitude.  I think from any altitude the ship's wake can be sighted at 100% range, the type at 75% range (warship or merchant), and the class at 50% range (but only at Low or less).  I suppose a Navy Auxiliary could look like a merchant, so maybe the altitude change was a good exercise.



#4 kmart494

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Posted 22 November 2015 - 08:14 PM

Turn 0630.

 

Radar contact with the second ship has been re-established.  The Bear is still at Low altitude and the contact is alone, so we will make an ID pass on this one.

 

turn0630.png



#5 kmart494

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Posted 22 November 2015 - 08:17 PM

Turn 0636.

 

The Bear made a positive ID as a neutral merchant.   The next move is to climb back up to High altitude and search for more ships.

 

turn0636.png

 

Edit:  I recreated the screenshots and saved them as PNG.  They look much better now.

.



#6 TonyE

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Posted 23 November 2015 - 02:04 AM

The PNG looks a little more crisp to me.

#7 kmart494

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Posted 23 November 2015 - 08:39 PM

Turn 0642.

 

The Bear continues to climb on a heading of 180 deg.  He picked up another contact further to the south.  However, the NATO convoy has picked up an ESM signal that is believed to come from a single source approximately 130 nm away.  Someone is snooping!  NATO will monitor the ESM bearings and see if a track develops.  The image below shows Blue side only.

 

turn0642.png



#8 kmart494

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Posted 25 November 2015 - 08:23 PM

Turn 0654.

 

The image below demonstrates one of the neat things you can do with SimPlot.  A player can graphically track unknown contacts and make decisions based on the available information.  Here, reference points were placed at every 3 minute turn where the ESM lines converged.

 

The NATO group classifies the ESM contact as a Bear D.  A look through the Data Annex shows that only the Bear D and some helos carry Big Bulge.  Based on the distance of the original contact, and the radar horizon, it was at an altitude above most helos.  Also, subsequent contacts revealed the speed to be greater than any helo.  It seems that the Bear has spotted the formation, and is now just outside SAM distance at 70nm.

 

turn0654.png



#9 kmart494

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Posted 26 November 2015 - 09:25 AM

Turn 0657.

 

The Bear is only allowed to remain in the area for two hours, so it must depart to the North by 0803.  For now it can afford to stick around and monitor shipping traffic for another 30 minutes (positioned so it can maintain radar contact with all known vessels), then it must begin heading home.  At 0730, the Red player will place reference points at all ship positions and "transmit" the information to K-503.  The sub will then be able to reposition itself for a better identification of the suspected NATO formation.  The Bear can return around 1300.



#10 kmart494

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Posted 26 November 2015 - 10:03 AM

Turn 0730.

 

The image below is the last information that K-503 will have until it can get close enough for sonar contact, or until the Bear returns.  K-503 will go deep and faster to get into a better position to intercept the NATO formation, which can be computed from this info.  In the mean time, the Blue player will launch a helo and do some surface scouting of its own.  Also, the Blue player receives a SIGINT (signal Intelligence) but not a location (failed dice roll).

 

turn0730.png



#11 kmart494

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Posted 29 November 2015 - 03:06 PM

Turn 1303.

 

The Tu-95RT has returned to the area and made radar contact with multiple surface ships.  Also, K-503 has come back up to periscope depth and slowed to 5 knots (since it was known that the Bear would return at this time).  After a few tactical turns, K-503 was able to classify two sonar contacts as ships.  The sub will communicate with the Bear to verify the contacts and their range (these are CZ contacts and the sub does not know how far away they are).  The Bear will remain at High altitude and move towards the estimated NATO position.

 

(The image below represents all the information available to Red side.  However, it is a combination of radar and sonar contacts, but the sub and Bear only knows "what it knows."  So, the Bear sees surface contacts as Large and Medium ships, but the sub only sees sonar bearings.  To keep things realistic, a player would have to keep in mind which information goes with the right unit, until they communicate and share data.  But the more they communicate, the greater the change of a SIGINT giving away the sub's location).

 

turn1303.png

 

I have range circle functionality up and running now (but no labels yet).  The yellow circle around the Bear represents the maximum distance to detect a Medium contact with Big Bulge.  The red circle around K-503 is the range of the SS-N-9.  These circles will be used as "reminders" of when certain events can take place, such as detection or weapon firing.



#12 kmart494

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Posted 29 November 2015 - 04:37 PM

Turn 1306.

 

The Bear has radar contact with the suspected NATO formation.  This info passed to the sub (SIGINT location probability now at 15%).  He will continue to make the rounds of identifying the single contacts without getting too close to the formation.

 

The NATO convoy has ESM bearings on a Big Bulge A radar.  Their "friend" is back.  That means something is up, so we will begin ASW operations by deploying towed arrays and one helo from Iroquois.  Halifax will slow to 5 kts and listen.



#13 kmart494

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Posted 29 November 2015 - 05:17 PM

Turn 1324.

 

Iroquois turns on all radars and picks up the Bear.  Since it corresponds to the Big Bulge ESM bearing, Blue player will classify the contact as hostile.  Also, Blue receives a SIGINT (delayed according to the scenario rules) but fails to locate the source.  The towed arrays will be fully deployed in one more Tactical Turn.

 

Conversely, the Bear picks up the LW.08 air search radar coming from the formation, and will now classify the entire formation as hostile.  This new information is passed to K-503.

 

Here is the current situation from the referee view.

 

turn1324.png

 

The white circle around the Bear is the visual identification range.  The helo has a yellow circle for Medium radar contacts.  I also added a 60nm SM2MR range circle around Iroquois.



#14 kmart494

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Posted 01 December 2015 - 08:39 PM

Turn 1330.

 

Since the Bear can only hang around for another hour and a half, K-503 will need to close the distance with the convoy to have a chance of launching while the Bear is around.  So, K-503 will go to Int III depth and 20kts.

 

NATO will send the helo to scout the navigation turn point.



#15 kmart494

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Posted 01 December 2015 - 09:37 PM

Turn 1418.

 

Halifax had to sprint to catch up to her station, but then slowed to 5 kts to listen again.  A faint contact was picked up, but it is on-again-off-again.  

 

K-503 will slow to 5 kts and come back up to talk to the Bear at 1430.  This should give the sub enough time to finalize the convoy position and fire missiles.

 

turn1418.png






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