How to Improve Naval Supremacy?

[DiscipleP]

Friendly naval supremacy is more than 4 times of enemy in sea of Japan by number, but by percentage it is 0%.

In details, my naval supremacy is 13000+, enemy has no more than 4000 (1460-3815). My ship with engaging order is 112, while enemy is 0. Intel efficiency is 25%. Air superiority gives a 5.4% bonus, and mine coverage gives a 100% bonus. These numbers give me a 0 naval supremacy.

I have 26 ships doing patrol mission, 40 submarines raiding convoys, and a golden fleet as striking force waiting in the harbor close to the sea. Even when a 60-ships fleet from my ally passed through the sea, naval supremacy is still 0.

How to make it, at least, over 51%?

I'd appreciate it if someone is kind enough to share me a link about how naval supremacy is calculated.

The HOI4 Wiki does not give any help to me.

 

[Goshawk]

Try to put all your fleet to naval invasion support. Strike force is not incorporated into naval supremacy value correctly(Not sure this is an oversight or a bug).

 

[Goshawk]

Also, u dont need to invade japan to make him capitulate. There is an event that will make Japan capitulate when you drop 2 nukes on him.

 

[Dlin369]

Based off what was posted on the forums recently - try getting some spies into Japan + sending some scout planes over the waters to get naval intelligence if you have La Resistance. Apparently that's being factored in now for naval invasions

 

[DiscipleP]

Based off what was posted on the forums recently - try getting some spies into Japan + sending some scout planes over the waters to get naval intelligence if you have La Resistance. Apparently that's being factored in now for naval invasions

I don't have that DLC, since its review is Mixed, even Most Negative recently. It would be a shame if buying that DLC is the only way to improve naval supremacy.

 

[DiscipleP]

Also, u dont need to invade japan to make him capitulate. There is an event that will make Japan capitulate when you drop 2 nukes on him.

Thanks. Actually I was going to invade Russia, trying to distract their army from Europe.

 

[Dlin369]

I don't have that DLC, since its review is Mixed, even Most Negative recently. It would be a shame if buying that DLC is the only way to improve naval supremacy.

If you don’t have the dlc I think decryption/encryption+ radars is what will affect intelligence

 

[Simon_9732495]

Friendly naval supremacy is more than 4 times of enemy in sea of Japan by number, but by percentage it is 0%.

Your intel efficency is below 30%. You need at least 30% to be able to have naval supremacy. Below 30% it will always be 0.0% regardless how many ships you have there.
That's why the tooltip says "We know too little about this Region"

How to get more "naval intel efficiency"?

I think you get it, when you fight the enemy navy. So you could try convoy raiding.

And some quick tests seem to indicate that you get it by researching Decryption techonlogy:

• Decryption1: +30% naval intel efficiency
• Decryption2: +15% naval intel efficiency
• Decryption3: +15% naval intel efficiency

If your enemy researches Encryption it seems to reduce the bonus Decryption gives for you.


More details on "naval intel efficiency" here -> https://hoi4.paradoxwikis.com/Battle_plan#Naval_intel_efficiency

 

[DiscipleP]

Your intel efficency is below 30%. You need at least 30% to be able to have naval supremacy. Below 30% it will always be 0.0% regardless how many ships you have there.
That's why the tooltip says "We know too little about this Region"

How to get more "naval intel efficiency"?

I think you get it, when you fight the enemy navy. So you could try convoy raiding.

And some quick tests seem to indicate that you get it by researching Decryption techonlogy:

• Decryption1: +30% naval intel efficiency
• Decryption1: +15% naval intel efficiency
• Decryption1: +15% naval intel efficiency

If your enemy researches Encryption it seems to reduce the bonus Decryption gives for you.

Found this answer in another post in this forum and asked my questions there.

I cannot post link, so here is the title "We know too little about this region!" Supremacy Oddities