Japanese Coastal Defence

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verdugo94
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Japanese Coastal Defence

Post by verdugo94 »

Hello,

I am playing as Japan and trying to improve my Coastal Defence, I have been searching for mobile CD´s but non of my units seem to be except the one in Wake. I remembered to read in an AAR that Japan had a few of them to place but I am unable to see them.

I hope you could help me
GetAssista
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RE: Japanese Coastal Defence

Post by GetAssista »

Some of them will come later, check your reinforcements queue. Some base forces have nice CD guns in TOE. But in general, there are very few CD gun units for Japan so place them strategically.
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BBfanboy
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RE: Japanese Coastal Defence

Post by BBfanboy »

+1.

The BFs with 120mm DP guns will fire at ships. Otherwise, look for units with "Coastal Gun Battery" in the name.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth
verdugo94
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RE: Japanese Coastal Defence

Post by verdugo94 »

Hello guys,

thanks for answering, I have been doing a more extensive research and most of the Base Forces with 12cm cannons arrive in 1944, are these the ones you are refering to?

Apart from them, another base with that kind of cannons that is mobile is 51st Base Force, the rest are on static, same with CD units.

Do you know if there is someone more that I cant find?

EDIT: I might been confused or searching wrongly but I can find none CD unit that I can load on a ship except the one in Wake, because their load cost is static.
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BBfanboy
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RE: Japanese Coastal Defence

Post by BBfanboy »

ORIGINAL: verdugo94

Hello guys,

thanks for answering, I have been doing a more extensive research and most of the Base Forces with 12cm cannons arrive in 1944, are these the ones you are refering to?

Apart from them, another base with that kind of cannons that is mobile is 51st Base Force, the rest are on static, same with CD units.

Do you know if there is someone more that I cant find?

EDIT: I might been confused or searching wrongly but I can find none CD unit that I can load on a ship except the one in Wake, because their load cost is static.
I think many of the existing named (not numbered) BFs upgrade their AA guns to the DP models. You would have to look at TOE changes in the editor to see when these upgrades can happen.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth
verdugo94
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RE: Japanese Coastal Defence

Post by verdugo94 »

So 8cm DP guns will fire in coastal defence? I thought they were just AA guns as many of my AA units carry it. Is DP dual purpose?

Sorry english is not my native...
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Lowpe
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RE: Japanese Coastal Defence

Post by Lowpe »

Coastal Defense guns, and almost all artillery will try to fire at an amphibious landing.

DP Guns and CD guns, may or may not fire at a shore bombardment force. Straits and restricted waters increase the chances and also the damage.

DP Guns and CD guns may or may not fire at minesweepers (usually they do).

Wake CD Gun unit is one of your best, with 20cm guns and is mobile. In stock there are four units that combined into two larger units that get dp guns (I recall having to spend PP so as the units can combine).

A lot of base forces have TOE upgrades giving them dp guns.

Any invasion spot you want to hold needs armor too.
Dili
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RE: Japanese Coastal Defence

Post by Dili »

Special base forces tend to have more guns than Base forces. The later usually have more support.
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Lokasenna
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RE: Japanese Coastal Defence

Post by Lokasenna »

Yes, Special Base Forces are ones you're looking for.

I think there are also a few regular base forces that include some guns - I think the ones that combine from the 22nd Port Unit, 23rd Port Unit, etc., but arrive in those constituent pieces early in the game.
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obvert
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RE: Japanese Coastal Defence

Post by obvert »

There are a confusing number of units that have CD guns for the Japanese. It can be confusing.

The most easy to find are the large numbered base force units. 1st Base Force for example, that come with 8 x 12cm 10YT DP and 16 x 8cm T88 DP guns. These will fire and do some decent damage to an ill-prepared invasion. If I remember correctly the DP guns come as an upgrade, or maybe just for some of the base forces. They're also a good addition to AA defences, these DPs being some of the better Japanese AA gun types.

The better units are all of different types and make-ups, and as Loka and others have said, often need to be combined. The Wake CD gun unit is the most obvious, and arrives intact.

They are:

Wake CD gun Bn - This one gets 20cm and 15cm CD guns plus 12cm CD and DP guns and some 8cm DP guns.

Kure 7th SNLF - a Naval Infantry unit - 8 x 12cm 10YT DP and 16 x 8cm T88 DP guns

Combined 8th SNLF - a CD gun unit. This one gets 14cm CD plus 12cm CD guns, 12cm DP and some 8cm DP guns when combining two units (a port unit and an SNLF).

3rd Special Base Force - an Engineer unit (Base Force) This one gets 20cm and 14cm CD guns plus 12.7cm DP and some 8cm DP guns in an upgrade.

31st Special Base Force - an Engineer unit (Base Force) This one gets 15cm CD guns plus 12.7cm DP, 12cm DP and some 8cm DP guns in an upgrade.

(These two are the only Special Base Force to get this CD gun addition. All others only get 4 x 8cm DP guns only).


There are a few other smaller mobile units, including some Naval Guards that arrive late on small islands around Japan and have 6 x 8cm DP guns.

Being different unit types the may behave slightly differently in certain situations, like reacting to and firing on a bombardment TF or firing at passing ships. I think only the CD gun types will fire in a strait at passing ships, but may be wrong on that.

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verdugo94
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RE: Japanese Coastal Defence

Post by verdugo94 »

Thanks all for your answers, they are really helpful [:)]
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rustysi
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RE: Japanese Coastal Defence

Post by rustysi »

I think the ones that combine from the 22nd Port Unit, 23rd Port Unit, etc.,

While these are nice large base units with lots of goodies when combined, CD guns are not among them.
16 x 8cm T88 DP guns. These will fire

There's a minimum range limit that is required for a 'CD gun' to engage a bombarding fleet. That being so most 8cm guns will not do so. IIRC there's only one type of Japanese 8cm that has the range (don't recall which it is, nor do I recall the range). Also note that many weapons will engage transports off-loading and invasion force, to include 75mm mtn guns and AAA weapons.

As for Japanese 'mobile CD units' these are few and far between. About Feb '43 there are a number of Japanese base forces that will 'upgrade' to a CD unit of sorts. They'll get 8 x 120mm CD guns. In addition they'll get 16 x 8cm DP guns, but I don't think they have the range to engage as 'true' CD weapons. There are a few units that will combine into nice 'CD' units. In addition Japan will get some reinforcement units that'll have 6 each, 14cm, 127mm, and 120mm CD guns (roughly 3 or 4 IIRC). These last guys arrive pretty late in the game.

So as you can see there are not many 'mobile' CD units at Japan's disposal, and that's as it should be historically.
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GetAssista
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RE: Japanese Coastal Defence

Post by GetAssista »

ORIGINAL: rustysi
16 x 8cm T88 DP guns. These will fire
There's a minimum range limit that is required for a 'CD gun' to engage a bombarding fleet. That being so most 8cm guns will not do so. IIRC there's only one type of Japanese 8cm that has the range (don't recall which it is, nor do I recall the range). Also note that many weapons will engage transports off-loading and invasion force, to include 75mm mtn guns and AAA weapons.
Where did that "minimum range limit" come from? Never heard of it. Bombardment can happen from different distances depending on settings.
Anyway, the main reason for CD guns is to not spook bombardments (I'd prefer them be silent when BBs are coming) but to guard mines and shred amphibious invasions
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rustysi
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RE: Japanese Coastal Defence

Post by rustysi »

Where did that "minimum range limit" come from? Never heard of it.

Its from one of our 'esteemed' posters, but since I'm not going to look for a thread where it was said (there are more than one) I'll not mention any names.
Anyway, the main reason for CD guns is to not spook bombardments (I'd prefer them be silent when BBs are coming) but to guard mines and shred amphibious invasions

As for this statement, I couldn't agree more. As I've said I've seen just about anything shoot at an invasion force. Hehe, as for guarding mines. Any place that has CD guns gets my first mine fields.[:)]

It is seldom that liberty of any kind is lost all at once. Hume

In every party there is one member who by his all-too-devout pronouncement of the party principles provokes the others to apostasy. Nietzsche

Cave ab homine unius libri. Ltn Prvb
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BBfanboy
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RE: Japanese Coastal Defence

Post by BBfanboy »

ORIGINAL: GetAssista
ORIGINAL: rustysi
16 x 8cm T88 DP guns. These will fire
There's a minimum range limit that is required for a 'CD gun' to engage a bombarding fleet. That being so most 8cm guns will not do so. IIRC there's only one type of Japanese 8cm that has the range (don't recall which it is, nor do I recall the range). Also note that many weapons will engage transports off-loading and invasion force, to include 75mm mtn guns and AAA weapons.
Where did that "minimum range limit" come from? Never heard of it. Bombardment can happen from different distances depending on settings.
Anyway, the main reason for CD guns is to not spook bombardments (I'd prefer them be silent when BBs are coming) but to guard mines and shred amphibious invasions
It is easy to confuse two separate parameters here. One is the max range of the CD/DP gun. The other is the stand-off distance of the bombarding TF (which can be set using the minimum range button on the Bombardment TF screen.

So if the Bombardment TF stands off at a range greater than the CD/DP gun can shoot, it can bombard with impunity (assuming mines are not a factor).

If the Bombardment TF is standing off but within range of the CD/DP gun, it may or may not shoot back depending on visibility, aggressiveness of the LCU commander, and supply available. If it does shoot it will not be as effective as if the Bombardment TF comes in really close.

Amphib TFs, including their embedded bombardment ships must come in close to discharge their troops/equipment/supply. The CD/DP guns will try to shoot at the transports but may be suppressed somewhat by the embedded bombardment ships or escort DDs. Even the APs/AKs themselves will shoot back.

After the unloading step is completed, there is another step where the troops hit the beach and cross it to cover. During this phase the CD/DP guns along with MGs and non-DP guns will contest the landings and draw casualties. I don't recall ever seeing suppressive fire from the ships offshore here - their own troops are too close.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth
Dili
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RE: Japanese Coastal Defence

Post by Dili »

I have this quote i don't know where i got it.
For artillery to Bombard needs to have at least 3 range and 5 soft damage(1), Coast defense guns and DP with less than 15Kyds may not fire

(1) this is for land combat.
Alfred
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RE: Japanese Coastal Defence

Post by Alfred »

This thread is starting to develop some urban myths regarding shore bombardment.
 
For a post regarding shore bombardment in context, see post #2810 in Lowpe's current AAR.
 
Basically, setting a minimum range for a bombardment TF does not mean the TF will stand off at that range and bombard.  A bombardment TF will run in to 15k or 30k yards from the shore to deliver a night or day bombardment respectively.  This is hard coded and not set by the player's selection regarding "minimum range".  The point of setting the range is to limit which ship guns will participate in the bombardment. It is a way to conserve the AA ammo for use against enemy aircraft instead of it being wasted on firing at the shore installation.  

Alfred
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BBfanboy
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RE: Japanese Coastal Defence

Post by BBfanboy »

ORIGINAL: Alfred

This thread is starting to develop some urban myths regarding shore bombardment.

For a post regarding shore bombardment in context, see post #2810 in Lowpe's current AAR.

Basically, setting a minimum range for a bombardment TF does not mean the TF will stand off at that range and bombard.  A bombardment TF will run in to 15k or 30k yards from the shore to deliver a night or day bombardment respectively.  This is hard coded and not set by the player's selection regarding "minimum range".  The point of setting the range is to limit which ship guns will participate in the bombardment. It is a way to conserve the AA ammo for use against enemy aircraft instead of it being wasted on firing at the shore installation.  

Alfred
I understand what you are saying but have had ships run in much closer than 15K yards- in fact as close as 4K. They did start out in that 15K plus zone before moving in as they bombarded.
No matter how bad a situation is, you can always make it worse. - Chris Hadfield : An Astronaut's Guide To Life On Earth
Dili
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RE: Japanese Coastal Defence

Post by Dili »

That is what Alfred saying BB: range setting does not limit how much the TF approaches land but what weapons are employed. So if you set 15km, only guns with 15km or over range are employed.

I suppose might have an indirect effect in distance TF stays from land by how much the TF moves until it spend the ammo part that the code reserves for bombardment.
Alfred
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RE: Japanese Coastal Defence

Post by Alfred »

ORIGINAL: BBfanboy

ORIGINAL: Alfred

This thread is starting to develop some urban myths regarding shore bombardment.

For a post regarding shore bombardment in context, see post #2810 in Lowpe's current AAR.

Basically, setting a minimum range for a bombardment TF does not mean the TF will stand off at that range and bombard.  A bombardment TF will run in to 15k or 30k yards from the shore to deliver a night or day bombardment respectively.  This is hard coded and not set by the player's selection regarding "minimum range".  The point of setting the range is to limit which ship guns will participate in the bombardment. It is a way to conserve the AA ammo for use against enemy aircraft instead of it being wasted on firing at the shore installation.  

Alfred
I understand what you are saying but have had ships run in much closer than 15K yards- in fact as close as 4K. They did start out in that 15K plus zone before moving in as they bombarded.

The urban myth I am referring to is the idea that it is possible to make a Bombardment TF totally immune from shore battery fire. That is simply not possible as it is hard coded that the TF will approach as close as 15k for night and 30k for day bombardments.

If the player opts to have "Escorts Bombard" or to have a minimum range set which is less than 15k/30k then the Bombardment TF will come even closer to shore in order to get within range for the use of the escorts guns and those other non escort ship guns whose range is less than 15k/30k.

Set a minimum range of 25k on a night bombardment will still see the TF move to 15k of the shore. Only the main guns will fire as the range of the secondary DP 5" guns is less than 25k. At this range of 15k, most shore CD guns will have the range to fire on the TF.

Alfred
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