How to know all the nation's strength and weaknesses (by NOOB):
1. KM
Kriegsmarine is the best play when you rush to the enemy and fires short range guns to undamage the enemy ship. Their AA guns are pathetic slow and fires in random directions are very easy to kill a single sailor but no damage to planes. Also, Kriegsmarine are the worst submarines in game. Their torpedoes will able to goes through enemy ships and not your ally ships. It is also has the worst gunners in game and they are trained by NOOB.
2. USN
United State Navy has considered amount of useless BB and the most lowest BBs in game. Their AA guns are always inaccurate and giving you no ship's gun guideline upon using it. Also, their fighter planes are the worst pilots in game and never shot a single rookie scout but getting shot by scouts instead.
3. UK
Royal Navy has the worst shell damage in game. It can only pepper out an enemy FF that are very slow with 15" gun. Since their lowest damage output are so low, it would take very looooong time to reload (Extreme situation: 5 minutes reloading). Also with their armor are the weakest in game and sunked by pathetic NOOB DD. Addition to that, it is also have the worst Torpedo bombers in game. It is require to take 50 torpedoes from bombers to kill very slow DD.
4. IJN
Imperial Japanse Navy has the worst torpedoes in game. It can fire SUPER SLOW UNHYPERED torpedoes and inoperated to common torpedoes. Since they have worst bombers in game. It wouldn't take a high damage to very slow FF drops only 30 bombs and never get sunked.
5. MN
Marine Nationale is similar as UK. But it is much worst of their shell damage. With pathetic engineers will able to goes super slow and get sunked out of nowhere. Since they are so slow, it would get sunked by a single FF shot.
6. SN
Soviet Navy has the worst of using super slow guns. It can take down an enemy by very slow weak salvos. Also, their ships is very high on displacement because of no demands whatever so.
7. RM
Regina Marina is not famous for their high angle guns. They can fire long range guns and not playing aggressive. Like UK engineers, it is much slower like MN. but, it is inbalancing to other aspect.
8. Neutral
Neutral is the worst place to start with. FF can really armed 50" guns and fires very fast. While other BBs are so pathetic. They would mostly use FF and thats what we are supposed to do. Yay to 50" gun.
All those guides are made by NOOB. Thank to him.