Things NSers do wrong
1. Improper reconnaissance
In a modern electronic environment it's extremely difficult for two fleets to come into very close contact with each other. It isn't a matter of "my fleet arrived within range of yours and fired guns." Not only is this probably godmodding, it also reduces naval warfare to a ridiculous "post losses" environment without any thought or strategy. A formation of warships will undertake such reconnaissance and avoidance maneouvres to make this sort of thing highly unlikely. You have to find your enemy: it's not assumed that you know where they are or that you "bump into" them (that will only happen under very certain conditions.)
2. Strafing
It's all too common to see "my planes dropped bombs and started strafing ships." This generally does not happen. A fixed wing or rotor aircraft that gets within cannon range of a surface vessel with at least a CIWS or any quantity of missiles is going to get wasted. It was possible in the Falklands War because the Argentines could come up behind the cover of a hill and because the British ships were very close to the coast. Also the RN was not equipped with CIWS: modern CIWS would murder aircraft approaching for a strafing run.
Generally iron bombs are not usable in NS because the quality of air defence is all of a very modern standard. The chances of your planes getting in range of a well-armed destroyer in the middle of a fleet in the middle of the ocean is <1%. See the Fleet Air Defence page for all the hostility they have to face to achieve this objective. Much better is to turn for home and re-arm.
3. Wolf packs
The use of the 'wolf pack' i.e. a close formation of submarines stems from an era when the only submarine-on-submarine sinkings were coincidental or unintentional. Modern submarines lack a degree of certainty about the identity of other submarines: the main method of distinction is the sound of the propeller, which can never be completely accurate. This is extremely amplified in NS with wide distribution of many similar types. Although a submarine can theoretically distinguish another submarines class there is no way it can distinguish their identity.
This means that modern naval submarines can never truly know whether another boat in the water is a friendly or not. Although there are some circumstances where it might be obvious, it can never be certainly known. This makes the incidence of friendly fire very likely. In a ground war, friendly fire between tanks and infantry is bad but not disastrous. Having one of your own submarines sink a friend or ally is a terrible occurrence and a huge waste.
Modern submarines tend to operate within defined sectors of the ocean and do not venture into other defined sectors. Submarines also sometimes extend satellite masts to exchange information with headquarters. Submarines can theoretically communicate with one another if they both happen to be surfaced at the same time. Nonetheless, avoid wolf packs - the incidence of friendly fire is too high.
4. Over-reliance on satellites
We're all familiar with "satellite spotted your ships. I attack with missiles!" No this does not work. To have sufficient range to scan the ocean for radar contacts from space, an orbiting radar must have a particularly low resolution. Warships come up as a single pixel on the screen of satellite radar units. There is no ability to distinguish nationality, type, or whether they are military (closely packed ships might come up as a 'blob' of pixels, however.) Only the largest superdreadnoughts will be identifiable from space by their huge size. Inversely, small stealth ships might not even be detected by radar satellites. Consider a stealth design of <3000 tons constructed with anti-detection measures.
It's significant that Soviet sadar satellites US-A type were never used for tactical targeting. Legenda GPS system was used for guidance of missiles in place of inertial. Radar satellites are strategic reconnaissance; that is to say they can be used to measure the quantity of forces in a given area, and they can be used to detect large quantities of mass, but they are not useful target weapons because of their imprecision. Ship and aviatiation sensors are more precise and useful.
Advantage of satellites is early warning, not targeting.
5. Air to air combat
6. Naval gunfire engagements
In a modern electronic environment it's extremely difficult for two fleets to come into very close contact with each other. It isn't a matter of "my fleet arrived within range of yours and fired guns." Not only is this probably godmodding, it also reduces naval warfare to a ridiculous "post losses" environment without any thought or strategy. A formation of warships will undertake such reconnaissance and avoidance maneouvres to make this sort of thing highly unlikely. You have to find your enemy: it's not assumed that you know where they are or that you "bump into" them (that will only happen under very certain conditions.)
2. Strafing
It's all too common to see "my planes dropped bombs and started strafing ships." This generally does not happen. A fixed wing or rotor aircraft that gets within cannon range of a surface vessel with at least a CIWS or any quantity of missiles is going to get wasted. It was possible in the Falklands War because the Argentines could come up behind the cover of a hill and because the British ships were very close to the coast. Also the RN was not equipped with CIWS: modern CIWS would murder aircraft approaching for a strafing run.
Generally iron bombs are not usable in NS because the quality of air defence is all of a very modern standard. The chances of your planes getting in range of a well-armed destroyer in the middle of a fleet in the middle of the ocean is <1%. See the Fleet Air Defence page for all the hostility they have to face to achieve this objective. Much better is to turn for home and re-arm.
3. Wolf packs
The use of the 'wolf pack' i.e. a close formation of submarines stems from an era when the only submarine-on-submarine sinkings were coincidental or unintentional. Modern submarines lack a degree of certainty about the identity of other submarines: the main method of distinction is the sound of the propeller, which can never be completely accurate. This is extremely amplified in NS with wide distribution of many similar types. Although a submarine can theoretically distinguish another submarines class there is no way it can distinguish their identity.
This means that modern naval submarines can never truly know whether another boat in the water is a friendly or not. Although there are some circumstances where it might be obvious, it can never be certainly known. This makes the incidence of friendly fire very likely. In a ground war, friendly fire between tanks and infantry is bad but not disastrous. Having one of your own submarines sink a friend or ally is a terrible occurrence and a huge waste.
Modern submarines tend to operate within defined sectors of the ocean and do not venture into other defined sectors. Submarines also sometimes extend satellite masts to exchange information with headquarters. Submarines can theoretically communicate with one another if they both happen to be surfaced at the same time. Nonetheless, avoid wolf packs - the incidence of friendly fire is too high.
4. Over-reliance on satellites
We're all familiar with "satellite spotted your ships. I attack with missiles!" No this does not work. To have sufficient range to scan the ocean for radar contacts from space, an orbiting radar must have a particularly low resolution. Warships come up as a single pixel on the screen of satellite radar units. There is no ability to distinguish nationality, type, or whether they are military (closely packed ships might come up as a 'blob' of pixels, however.) Only the largest superdreadnoughts will be identifiable from space by their huge size. Inversely, small stealth ships might not even be detected by radar satellites. Consider a stealth design of <3000 tons constructed with anti-detection measures.
It's significant that Soviet sadar satellites US-A type were never used for tactical targeting. Legenda GPS system was used for guidance of missiles in place of inertial. Radar satellites are strategic reconnaissance; that is to say they can be used to measure the quantity of forces in a given area, and they can be used to detect large quantities of mass, but they are not useful target weapons because of their imprecision. Ship and aviatiation sensors are more precise and useful.
Advantage of satellites is early warning, not targeting.
5. Air to air combat
6. Naval gunfire engagements