Submarine port supply interdiction issues

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Submarine port supply interdiction issues - 1/10/2021 1:05:08 PM

squatter

Posts: 585
Joined: 6/24/2006
Status: offline

I've been trying to get some value out of the Italian sub fleet by attempting port supply interdiction.

I noticed that I NEVER sunk a single supply point, while regularly losing a sub step, more or less every turn.

I ran some tests - Observations:

If a port has an air unit in range, I can NEVER sink any supplies with Italian subs. Probably ran about 15 turns testing this out with two subs sat 1 hex off Tobruk in raider mode. Italian subs lose more or less a step between them per turn.

If you remove the air unit, suddenly the subs start sinking a decent amount of supplies, often around 80% of port supply per turn.

So what we have here is something of a zero-sum game: If an air unit is present, you can sink nothing. If there's no air unit, you can sink a lot.

Of course the presence of an air unit should disrupt the sub ops, and cause sub losses, but not to the extent that the subs can no longer sink any traffic whatsoever?

Post #: 1

RE: Submarine port supply interdiction issues - 1/10/2021 1:40:42 PM

gwgardner

Posts: 5966
Joined: 4/7/2006
Status: offline

I would think no sub commander would dare to attempt interdiction of a port when land-based air defense was present. If that's the case, air defense over a port should mean no sub interdiction success, ie the sub would always be hiding and not interdicting.

< Message edited by gwgardner -- 1/10/2021 1:41:11 PM >

(in reply to squatter)

Post #: 2

RE: Submarine port supply interdiction issues - 1/10/2021 2:27:02 PM

squatter

Posts: 585
Joined: 6/24/2006
Status: offline

quote:

ORIGINAL: gwgardner

I would think no sub commander would dare to attempt interdiction of a port when land-based air defense was present. If that's the case, air defense over a port should mean no sub interdiction success, ie the sub would always be hiding and not interdicting.

Yes, you are essentially right.

But a couple of caveats as far as the game is concerned:

a) the game only allows you to 'attack' shipping bringing supplies to ports when you are within four hexes of the port. There is no other option for submarines to interdict this kind of shipping.

b) The UK can have a bomber unit in range to 'defend' its port, and the Axis can have a fighter in range to 'defend' the subs. I'm still unsure about what the effects of this are. The more tests I run, the less I'm sure of any patterns.

QUESTIONS:

1. AM I CORRECT THAT FRIENDLY AIR UNITS IN RANGE OF PORTS WILL INTERFERE WITH ENEMY SUBS TRYING TO INTERDICT THAT PORT?

2. IF SO, DOES THE FRIENDLY AIR UNIT NEED TO BE IN RANGE OF THE PORT, OR IN RANGE OF THE SUB UNIT?

3. IF I HAVE A FRIENDLY BOMBER DEFENDING A PORT FROM SUB INTERDICTION, DOES THE PRESENCE OF ENEMY FIGHTERS IN RANGE OF THE PORT HAVE ANY IMPACT ON THE CALCULATION (IT SHOULD, OF COURSE)?

4. DOES THE WEATHER AT SEA HAVE ANY IMPACT ON THE DEFENDING AIR UNITS' ABILITY TO ATTACK THE SUBS?

5. DOES THE WEATHER AT SEA HAVE ANY IMPACT ON THE SUBS' ABILITY TO INTERDICT THE PORT?

(in reply to gwgardner)

Post #: 3

RE: Submarine port supply interdiction issues - 1/10/2021 4:55:13 PM

AlvaroSousa

Posts: 7472
Joined: 7/29/2013
Status: offline

enemies and friendlies are compared in a formula to determine how many supply stockpile are hit. Occasionally a MM is sunk.

These units are considered attacking or escorting.

To sink the raiders you need to sink the raiders with air or naval.

Closer you are more damage you do to supply.

range is 5 for ships, 10 for air (or less if less range)

Weather no impact

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(in reply to squatter)

Post #: 4

RE: Submarine port supply interdiction issues - 1/10/2021 5:33:18 PM

squatter

Posts: 585
Joined: 6/24/2006
Status: offline

Thanks Alvaro.

So, to answer my own questions, could you confirm I am right in saying:

1. AM I CORRECT THAT FRIENDLY AIR UNITS IN RANGE OF PORTS WILL INTERFERE WITH ENEMY SUBS TRYING TO INTERDICT THAT PORT?

YES

2. IF SO, DOES THE FRIENDLY AIR UNIT NEED TO BE IN RANGE OF THE PORT, OR IN RANGE OF THE SUB UNIT?

PORT

3. IF I HAVE A FRIENDLY BOMBER DEFENDING A PORT FROM SUB INTERDICTION, DOES THE PRESENCE OF ENEMY FIGHTERS IN RANGE OF THE PORT HAVE ANY IMPACT ON THE CALCULATION (IT SHOULD, OF COURSE)?

YES

And final question:

If I want to best defend my port from enemy interdiction...

To defend against subs I want air units with ASW?

To defend against naval interdiction I want air units with naval air?

To defend against air interdiction I want air units with air to air?

ie, if there are both subs and enemy air units interdicting my port, I want a fighter and a tac air group in range of the port?

Appreciate it

(in reply to squatter)

Post #: 5