Use the WLR9 to determine if the torpedo is range gating. Initially go deep and to maximum speed launch an evasion device and reload.

On torpedo evasion: Have an evasion device loaded.You can then enter that range into FireControl to initiate a preemptive attack. Multiply the displayed interval by 800 to get the range in yards. The WLR9 interval can tell you the range ONLY IF THE CONTACT IS RANGE GATING.On the other hand, if the contact should start to range gate, you can be 95% sure he has contact and is moving in for an attack. If the contact stays in a long range scale, it is likely that he does not have contact on you. In the 'range gate' mode, the sonar automatically send out another pulse as soon as the echo is heard. When the sonar operator hears a return echo, he probably would do two things: shift to the shortest possible range scale to allow him to get more frequent range information on the target, and switch his sonar to the 'range gate' mode. So for every second that elapses between the outgoing pulse and hearing the return echo, the range is 800 yards. Therefore it takes 2 seconds for the sound to go out to 1600 yds AND return. The speed of sound in water is about 4800 feet/sec (1600 yds/sec). This means the sonar will send out another sound pulse after sufficient time has elapsed for the previous pulse to go out to the end of the search range and return. Active sonar normally searches on a selected range scale of typically 4000 yds, 10000 yds, or 20000 yds.Sonar contacts that are NOT auto-assigned when there is a tracker available is not an objective. As these targets are sunk and removed from the game, ATF trackers become available and are then refilled with other targets having a primary or secondary 'sink' objective. These should be the first targets to be fired upon.

This applies to the EASY mode: Targets with a primary or secondary 'sink' objective are automatically assigned to available ATF trackers.The sound effect will stop until the next time the target cavitates. If the Sierra target cavitation sound effect gets stuck and won't stop after 30 seconds or so, simply hit ESC and then select NO when the pop-up asks you if you want to exit the game.You can torpedo anything with a draft of 6 feed or greater.Keep zeroing the bearing and altering the torpedo's course as required. Take the default range of 10K yards and activate the torpedo right out of the tube. The key to handling contacts with a relatively high bearing rate change is to realize that they are close.Use the right mouse button for large changes in the tedious fire control station.Here are a few tactical suggestions to try. For TIPS and troubleshooting help, click hereįast Attack is a great sim, featuring sharp graphics, intense action, superb nuts-and-bolts realism, and a top-notch soundtrack.

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