In the report they talk about the bearing rate as an indicator whether its a closing or opening contact.
Quote:
He said that, as sonar supervisor, he looked for "something with a very high bearing rate, something that may be on our left side drawing right, or right side drawing left," which could represent a "closing" situation (meaning the target is heading toward the submarine). He said that when sonar first gained S-12 and S-13 (the Ehime Maru), "they did not have much of a bearing rate."
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Where do I get that info in DW when I have a tracker assigned to a contact?