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New interception feature debate

 
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New interception feature debate - 5/11/2008 6:00:21 PM   
zook08

 

Posts: 138
Joined: 2/19/2008
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I've suggested a new interception feature for the next game, and some people (including Vic) agreed that it would be a good thing to have. Now I'm wondering how it could actually work.

Naval interception means that a fleet or bomber force could be set to automatically intercept and attack enemy fleets within a certain range during the enemy's turn. The way AT works now, an enemy transport fleet could pass by my battleships and land troops on the coast without any danger of being attacked. Germany could capture London with three unescorted transports, although the entire Royal Navy waits in the channel. There isn't much point in occupying islands in the Pacific, because an enemy fleet can just sail straight from San Francisco to Tokyo, right past any number of airbases and fleets.

For starters, there already is the air interception function, where your fighters attack incoming planes. But there is a problem with that: If I have five fighters set to intercept but the enemy attacks with 15, it will result in my five being shot down, most likely without causing any losses. I can set the Loss percentage (retreat when this number of losses is reached during combat) to any value I like, with a 3:1 ratio against me, most of my planes will probably die without having a chance to retreat.

If that happens with naval interception, the feature breaks more than it mends. My destroyers should attack a sub, or my two cruisers should attack one enemy cruiser, but not a fleet of battleships. No suicide attacks. We'd need a setting which governs the strength ratio at which they will attack. Of course, if they miss a battleship or two during recon, that's tough luck but that's OK.

* At what range should interception be possible, i.e. where do the AP come from, your last turn or your next turn? Do you have to reserve AP for interception at the end of your move, or are they subtracted from your next turn's AP? Or does interception cost no AP (like air interception), but is limited in range (e.g. half your fleet's normal range)?

* When is it triggered? Only if the fleet itself spots an enemy fleet nearby? That would limit the usefulness of interception. Or is it triggered by any fleet being spotted by your side, as long as your fleet can reach the hex? The problem is, if your intercepting fleet is south of that hex where the enemy is spotted and the enemy is moving north, you probably won't catch them. But how would the game know that? It's difficult to design a rule and program it. There are lots of board games with naval interception rules, but AFAIK they all use a few large sea areas instead of hexes. It's more abstract but interception (and other things) are much easier to handle that way.

* Will your fleet always *find* the enemy, or is there a chance that their fleet slips through? I think there should be, but how good is it?

* About the strength ratio: fleets have Power Points, but the scenario designer should make sure that transports don't have PP. And because of AT's combat system, an intercept setting of "Attack only if 1:1 or better" could still result in three destroyers not attacking three subs because the subs have a slightly higher total power point rating.

* And I haven't even touched air-to-sea interception yet... sigh.
Post #: 1
RE: New interception feature debate - 5/11/2008 6:44:44 PM   
Vic


Posts: 3719
Joined: 5/17/2004
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hi zook,

thanks for thinking a long. i am reading with interest. but just for the record i said i agree that the naval model should be altered, not necc to implement this with naval intercepts.

(in reply to zook08)
Post #: 2
RE: New interception feature debate - 5/11/2008 6:48:48 PM   
zook08

 

Posts: 138
Joined: 2/19/2008
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Oops, sorry. You did. I was just trying to kickstart a discussion about the naval model.

(in reply to Vic)
Post #: 3
RE: New interception feature debate - 5/11/2008 7:46:04 PM   
tweber

 

Posts: 1411
Joined: 6/27/2007
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quote:

The way AT works now, an enemy transport fleet could pass by my battleships and land troops on the coast without any danger of being attacked. Germany could capture London with three unescorted transports, although the entire Royal Navy waits in the channel.


Capturing a defended position is very difficult. Amphibious assaults have a 3x defensive penalty. They also get no concentric bonuses. This type of invasion will only work if the hex is not defended or leveled with overwhelming air power. Also, the position will be difficult to hold if you cannot supply. In the end, supply will determine if a strategic invasion works, not the ability to gain a single hex.

quote:

There isn't much point in occupying islands in the Pacific, because an enemy fleet can just sail straight from San Francisco to Tokyo, right past any number of airbases and fleets.


This is somewhat historical as many islands were bypassed. However, one issue is that fleets can can too much supply. We probably need to reduce this somewhat. One thing to consider is toggling off at sea supply transfers. With this, you really can stay at sea forever.

quote:

For starters, there already is the air interception function, where your fighters attack incoming planes. But there is a problem with that: If I have five fighters set to intercept but the enemy attacks with 15, it will result in my five being shot down, most likely without causing any losses. I can set the Loss percentage (retreat when this number of losses is reached during combat) to any value I like, with a 3:1 ratio against me, most of my planes will probably die without having a chance to retreat.


An sea intercept model that can be toggled on and off is probably not a bad idea. Especially for scenarios with monthly turns.

(in reply to zook08)
Post #: 4
RE: New interception feature debate - 5/11/2008 9:25:24 PM   
Herode2


Posts: 188
Joined: 10/30/2007
Status: offline
As for suicidal attacks and so on, I wonder if we could workaround this problem by slightly altering the point of view.

Instead of having naval units automatically and blindly intercept each other, we can imagine ways of hampering ennemy movements : let's suppose a naval units applies a ZOC with a radius depending of its available AP. If the ZOC is well tuned, this may heavily slow the enemy moves in that zone, thus allowing further "manual" interception during the active player's turn.

Hmmm, let's see... Say a naval hex costs 10AP (instead of 20), a naval unit fully APed has a 5 hex radius ZOC for a 5 AP malus in the ZOCed hexes. A 3 destroyers + 1 cruiser patrol would apply a 20AP malus by hex.

Too heavy...

Make the malus proportional to the ennemy strength ?
Malus = 5AP / patrolling unit applying his ZOC in this hex - 2 AP by ennemy unit trying to move, - 8 AP for stealth units like subs. The bonus / malus could also depend on the XP of the units, the supply status, the air interdiction status, some scenario settings, etc etc.


(in reply to tweber)
Post #: 5
RE: New interception feature debate - 5/11/2008 11:17:17 PM   
SSFSX17

 

Posts: 173
Joined: 10/14/2001
From: California
Status: offline
Herode2: very good idea

It might also help if LOS calculations for sea hexes made it easier to see enemy naval formations far away into the distance, although not positively identifying them until they get closer.

(in reply to Herode2)
Post #: 6
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