SUBSIM Radio Room Forums - View Single Post

Julhelm · 07-01-17, 02:59 PM

40 is crazy high for the dipper. It essentially turns it into BQQ-5.

Also, I looked at the values for your torpedoes and they seemed crazy high.

At the time of shooting, you are doing 5kts in the 688. It has a stock selfnoise of 115db, so that makes your output 120db. Now, a little earlier, we could see the Krivak had you on -10db passive. Now, the reason the Alligators turn away the instant you fire your torpedoes is not because THEY detect them. Alligators don't have sonar gear, so it must be that your torpedoes are loud enough for the escorts to detect them at the time of launch. That's why they know your exact position.

If you have a 20db advantage, but fire a torpedo that's well above that, say putting out 160db, you've just announced your presence. The Kresta and the Krivak both have the same Bull Nose passive/active, so it's a fair bet they both pick up your torpedoes and can triangulate your datum.

07-01-17, 02:59 PM	#9
Julhelm Seasoned Skipper Join Date: Jul 2007 Location: The Icy North Posts: 690 Downloads: 189 Uploads: 0	40 is crazy high for the dipper. It essentially turns it into BQQ-5. Also, I looked at the values for your torpedoes and they seemed crazy high. At the time of shooting, you are doing 5kts in the 688. It has a stock selfnoise of 115db, so that makes your output 120db. Now, a little earlier, we could see the Krivak had you on -10db passive. Now, the reason the Alligators turn away the instant you fire your torpedoes is not because THEY detect them. Alligators don't have sonar gear, so it must be that your torpedoes are loud enough for the escorts to detect them at the time of launch. That's why they know your exact position. If you have a 20db advantage, but fire a torpedo that's well above that, say putting out 160db, you've just announced your presence. The Kresta and the Krivak both have the same Bull Nose passive/active, so it's a fair bet they both pick up your torpedoes and can triangulate your datum.