OOC: Omega, the reason Im behind you is because sonar arrays actually have a 30 degree blind spot on the back of submarines. The reason is because the noise from the props at close range drowns it out. A submarine that is being trailed has practically no way to detect the enemy sub. And you can't calculate enemy range with the passive sonar array.
There are submarines that are so quiet that the blind spot does not apply. The noise is low enough that passive sonar could work. There are conventional subs that are extremely stealthy.
No there are not shogun, that is a fact. Every submarine and ship has that exact same problem. It's like a jet fighter, if an enemy fighter jet is underneath and behind you there is no way you can see him visually because the engine and hull are in the way.
There is no submarine that does not have the blind spot. It's a universal trait.
And passive arrays are not always effective depending on which submarines. Some submarines can use them well up to 15 knots, others cannot really use them above 7 because of water moving over the hull.
It could be countered by using very slow motion or no movement at all, thus less noise and possibility for passive sonar to detect the target.
No it cant. Shogun this is a fundamental fact. No sonar can see beyond that 30 degree angle. They dont even have passive arrays back there. They have passive arrays on the cylinder of the submarine and on the cone, sometimes even the cylinder of the sub is split in half so there are three arrays. But no submarine has or ever will have a sonar array on the rear 30 degree angle of the ship. It is a fundamental fact.
Out of game: I also looked it up, and you were right, I was wrong, my bad, sorry. I thought it could, because ships can. Another blind spot is pockets of warm and cold water.
np, usually warm and cold water pockets are more of a distortion than a blind spot. The amount of distortion usually depends on the size and temperature difference of the pocket.
There is also a boundary between shallow and deepwater, its usually only a dozen or so feet wide and it's different at different locations depending on depth, temperature, etc... But usually sonar above the boundary has an extremely dificult time detecting a sub below.