[goldorak]

Сообщение от Гена

Well in your case it is arcade too, because TIW irrespective of torpedo noise which is detected at tens of miles.

No, CrazyIvan already said that for subrocs you would get a TIW message from quite far. That means that noise level AND distance are taken into account. And a subroc launch makes much more noise than a torpedo one.
So it is acceptable to get a subroc alert before a torpedo alert.

Fantastic! New mission in DW: trying to establish time of ""TIW" And what is deep meaning of "TIW" message now? It is better to remove this message completely in this case.

No if you remove completely TIW message thats not realistic one bit.
Think of it this way, you are the captain of the sub. Wether or not you're on the sonar station, on the tma station etc... there will be a moment when someone of your crew will inform you automatically "sir, we have inbound torpedo" or "sir, we have detected subroc launch".
So the message is a necessity.
We can debate at what moment this alert is given.
But from what CrazyIvan wrote we can infer that distance and noise are taken into account.

I don't know what is "rules of sub warfare" but i know that life of the sub and all the crew depends on each member of the crew. Including the acoustics. That's for shure. So they must not loose their attention even for 2 minutes as you said even if you're not at sonar battlestation.

If you have situational awareness, then nothing will surprise you at the last moment (except if an airplane or helicopter drops a torpedo right over your head).

The more torpedo detecting distance the more chances you avoid. It sounds unreal that 4 nm disatance safe enough. Not for guys inside the pressure hull.
And again what is the point in this message if you are tracking torpedo by yourself? And if you're not tracking that this message is still cheat even at 3 miles distance.

Avoidance depends on may factors.
How far the torpedo is, what speed is he going, at what moment was he activated, is there a thermal layer, how big is the acquisition cone of the torpedo, has your opponent fired only a snapshot or does he have a correct firing solution on you.
Evasive action is different from avoidance. Avoidance puts you out of harm's way all the while mainting tactical awareness. Evasive action is a last ditch effort to shake off the incoming weapon (which means going to maximum speed, doing radical manoeuvers, launching contermeasures, changeing depth and so on). And while doing this you are oblivous to what your target is doing.
To finish, CrazyIvan never said the TIW message would be given at a SPECIFIC distance. There is a certain latitude in this.