Quote:
Originally Posted by gutted
if you cant see them after you locate their sound direction, you need to surface and go full speed towards the direction you heard them. Wait 10-20 minutes, then repeat if you haven't spotted them yet.
If it's a single contact you can employ some advanced tricks figure out it's course and range by sound alone, but at the ranges you hear in these old boats its usually not necessary. The technique is mostly useless against a convoy as it requires you to track a specific sound contact at regular intervals over a long period of time.
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From an interest point: How do you determine range based on the hydrophone? Triangulation or what?